US1628637A - Key-cutting device - Google Patents

Description

1, 2 May 10.1927. SHAW 6 8637 KEY CUTTING DEVICE Filed April 4. 1921 5 Sheets-Sheet 1 May 10. 1927. 1,62

J. H. SHAW KEY CUTTING DEYICE Filed April 4. 1921 3 Sheets-Sheet 2 May 10.1921. 1,628,637

J. H. SHAW KEY CUTTING DEVICE Filed April 4. 1921 5 Sheets-SheetS 7 so ml 67 '7' gwuen ro'c Patented May 10, 1927.

UNITED STATES PATENT OFFICE.

JOHN H. SHAW, 011 NEW HAVEN, CONNECTICUT, ASSIGNOR T0 SARGENT & COMPANY, OF NEW HAVEN, CONNECTICUT.

KEY-CUTTING DEVICE.

Application filed April 4,

My invention relates to key cutting machines and more particularly to a machine designed to cut notches or undulations in the bit of a key blank, the term bit being used to refer to that portion of the key wherein the tumbler notches are formed. In the preferred form of my device which 1, have chosento illustrate the principles of my invention, each of the notches in the key bit is cut separately, and is cut to measurement, the desired depth of the notch being known in advance or predetermined. It is obvious,

.therefore, that while my device is highly useful in originatim keys or producing a new or original key hit not heretofore used, it is equally easy to duplicate any given key by cutting a bit exactly like that of the sample. It, moreover, has the great advantage over prior duplicating machine" that the notches cut in the key bit are cut to measurement and their depth is not controlled entirely by the depth of the notches in the sample key, the bit of which may have been so worn by use that its operation is no longer satisfactory and an exact duplicate of its )resent shape would not be desired. As the key cutting is usually stamped upon the head of the key eitherdirectly or in code, it is possible by the use of my improved device to make an exact duplicate of the key as originally cut.

hile my improvements are well adapted to be used in a small machine designed to be used by a locksmith, by the manager of a hotel or large building or by the manager of an automobile agency for the production and reproduction of keys to fitthe locks for which they are required, the; are also adapted for use in machines which are to be employed in a factory where keys are to be originated and duplicated.

l leretofore, key cutting machines have sometimes been provided with a plurality of 1921. Serial No. 458,185.

my inventiom a single cutter and arrange for the cutting of notches of different depth and at different points along the key bit by producing relative movement, both longitudinally and transver ely of the key axis, between the cutter and the key.

()ne object of my invention is the previson of a simple and eliicient machine to cut a notch of measured depth in a key bit.

Another object of my invention is the provision of an efficient machine by which keys may be both originated and duplicated.

A still further object of my invention is the provision of a device by which a key bit maybe cut to measurement so as to produce an original key or to reproduce a key as originally cut. I

Still anotherobject of the invention is to produce a machine, by which key bits of difterent cuttings may be made by means of a simple adjustment of steps or the like and without the taking off and replacement of various parts of the machine.

Further objects of the invention are to provide for relative movements of the cutter and the key, both longitudinally and transversely of the key axis; to provide improved means for regulating and indicating the depth of the notch cut in the key; to provlde improved means for spacing the notches longitudinally of the key bit; to pro-- vide improved means for presenting the key to the cutter; and generally to construct E1 device of the character described which will possess simplicity of construction, cfliciency in operation and which may be operated by those not especially skilled in this line of work.

To these and other ends the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In. the acconuaanying drawings:

Fig. 1 is a side elcvational view of a key cutting machine embodying my improvements Fig. 2 is a top plan view of the same;

Fig. 3 is a rear end view of the dev' :e;

Fig. 4 is a sectional view on line -"l4; of Fig. l;

Fig. 5 is a sectional view of. the movable carriage taken upon on line 5 5 of Fig. 1;

Fig. 6 is a transverse sectional view taken on line 6--6 of Fig. 1 looking in the direction of the arrows;

Fig. 7 is a longitudinal sectional view taken upon line 77 ofFig. 2;

Fig. 8 is a detail sectional view of the spacing bar and key clamp taken upon line 88 of Fig. 2;

Fig. 9 is a sectional view similar to Fig. 7, but showing the carriage in its forward position and Fig. 10 is a detail view of two keys, one shown prior to the operation of cutting and one shown after the notches have beencut in the bit thereof.

The key cutting machine which I have chosen to show my improvements in their preferred form consists of a supporting fr'ame, which I designate by the letter A, a cutting mechanism B, a carriage frame G, a key clamp D,and an indicating gauge mechanism E. To bring the key, when secured in the key clamp into contact with the cutter, it is, of course, essential to move either the key or the cutter relatively to each other. To accomplish this I have shown the carriage frame C, which carries the key clamp as movably mounted upon the frame A, so that the key which is su )ported in the clamp upon the carriage may e moved into position to be engaged and operated upon by the cutter. But, while it is necessary to produce a relative movement of the cutter and key, it is not to be understood that my improvements are to be limited to that type of machine wherein the key is moved into engagement with the cutter, as such an ar- 7 rangement is merely shown by way of illustrating a preferred form of my device.

To proceed with the detailed description of the different parts of the device, the supporting frame consists of a base plate 10, provided with a plurality of upstanding; arms or standards which are adapted to support the different elements of the machine. The base plate comprises a forward relatively narrow portion 1O upon which the two arms 11 supporting the cutting mecha nism are carried, and a broader rear portion 10 from which rise four relatively shorter arms 12 provided at the corners respectively of the rear portion of the base plate. A pair of arms 13 and 14, which are situated in alignment with each other near the longitudinal center of the base plate to support the gauge mechanism E, are carried hythc rear portion 10 ofthe plate. The supporting arms 11 may be, if desired, made separately from the base plate and detachably secured thereon, so if it is desired to secure wheels of varied dimensions upon the plate, arms of varied length may be attached to the plate to properly support the cutters in relation to the other mechanism.

These two. arms are provided near their upper ends with journals 15, in which is loosely mounted a shaft 16 upon which a rotary cutting wheel 17 is secured in any suitable way. As shown, a spacing collar 18 is secured upon the shaft and the cutter is locked against this collar by means of a nut 19, which is threaded upon the shaft 16. The cutter 17 is thus securely held against movement longitudinally of the shaft. The cutter shaft 16 may be rotated by any suitable in MRS. but I have shown for this purpose a gear 20 adapted to be rotated by a crank 21, which gear is shown in mesh with a pinion 22 secured rigidly upon the shaft 16. The gear 20 is provided with a suitable stub shaft .23 which is rotatably supported in a journal 21- provided upon the forward end of the base plate 10. A, set screw 25 may be set into the journal 2'- to retain the shaft of the gear 90 within this journal.

The arms 12 are provided in pairs with aligned openings 26 which serve to support gruide rods 27 upon which the carriage C is movably mounted. These rods are secured within the openings 26 by set screws 28 shown more particularly in Fig. 2. The carriapge (1 consists of a supporting plate 2.) from which depend four perforated lugs 30 by which-the carriage is slidably mounted upon the rods 27. As shown, the pairs of lugs upon each side of the machine receive one of the rods 27 within the perforations thereof, and thus a satisfactory and reliable mounting is provided for the carriage. The plate 29 is provided at its under side with a depending" stop lug 8.1, the purpose of which will be hereinafter described and is also pro vided upon its underside with a lug: 32 which has a cam face 33 at one corner thereof to cooperate with the cam shaped end 3-1- of a lever 36. which is pivoted at 37 to the upper end of the arm 14:, as shown more 1nurticularly in F 7. The cam portion of the lever is provided with a stop pin 38, which serves to contact with the standard 14 to limit the movement of the lever in a. clockwise direction past the position shown in full lines in Fig. 5. A. spiral spring 39 is coiled about each of the guide rods 27 and is compressed between the rear perforated lua' 30 and a pin 4.0 which passes through the rod 2-7 adjacent the forward lug]; 30. As may he clearly seen from Figs. 2 and 5, when the cam lever 36 is turned from the full line position shown in Fla the cam 34; of this lever will by its contact with the cam surface 33 of the lug 32 more the carriage C toward the right in this figure. so that they he" clamp will be. moved toward the rotary cutter. 'lhe m vement of the carriage forwardly toward the cutter will compress the springs 35) between the lugs 30 and the pins 40. so that when pressure is released upon the lever 96, the carriage will be moved back to its normal position by the springs. The contact of the cam surface 33 with the lever 3t will at this time move the lever back to normal position, the stop 38 contacting with the standard 1-l just prior to the contact of the rear lugs with the Supporting arms 12. The arrangement of the stop 38, just described, while, of course, not cssentialto the operation of the machine, will prevent any loose play of the parts and any lost motion of the lever 66. As shown in Fig. 5, the stop lug 31 is provided upon the lower face of the lug 32, but such an arrangement is not essential, as these lugs may be formed entirely separately.

The carriage C is provided at the rear of the plate 29 with a supporting rod 41, which serves to mount the key clamp D, as will be more fully described hereinafter. The ca.r riage is provided at its forward portion in front of the plate 25) with two threaded perfo ated lugs 42 which support the key spacer bar 43. Threaded set screws 44 are inserted through the perforated lugs 42 and are adapted to rotatably support upon their opposing ends the spacer bar which is provided with a knurled wheel 45 by means of which the same may be turned to different positions. The spacer bar 43 is provided with a plurality of rows of openings 46, as shown .in Figs. 2 and 5. Three of such rows of openings are shown in the drawings, but it is, of course, obvious that the bar may be provided with any number of such openings which is desired, and that the spacing of the different openings within the rows may be varied, as desired. It will be seen that as the SPtlCll'lg of the openings in the different rows 46 will determine the distance between the notches which are cut in the key, that it will be desirable to have the openings of each row spaced the same distance apart. One row, however, may begin at any desired place upon the, bar 43 and may have any desired spacing with relation to that of the openings of the remaining, rows. To provide for the stopping and the yieldable retention of any one of the rows 46 in position with relation to the carriage C, a plurality of recesses or depressions 47 are provided upon the side tace of the knurled wheel 45 and are adapted to receive a pin 49 spring-pressed by a coil spring 50, which pin and spring are set in a socket 51 formed in the plate 29 and re tained therein by the small set screw 52. 'llhere are preferably as many of the recesses 4-7 as there are of the rows of openings 46, and one of the recesses will come into regis tration with the spring-pressed pin 49 when one of the rows of openings 4-6 is positioned upon the top of. the spacer bar to pro ierly cooperate with the key clamp D.

The key holder or clamp 1) consists of a lower plate 55, which is provided with a depending lug, 56, having a transverse twiening 57 by which it may be slidably and rotatably mounted upon the supporting rod 41 upon the carriage C. The plate also provided with an upstanding lug 58 transversely perforated torecoive a rod 59, which is secured against moven'ient therein by a set screw 60, which will be best shown in liigs. and 7. Upon the rod 59 upon opposite sides of the lug 58 are mounted the forked arms (51 and (52 of a clannping plate till, which cooperates with the plate The clamping plate (33 is rotatably mounted upon the rod 59, so that it may swing about this red relatively to the plate to spread the clamp so that a key may be inserted therein. A plate 64; of hard steel is provided near the front end of the plate 55 and a similar plate (35 is provided near the forward edge of the plate 63. These plates (i l and as are adapted to serve as the clamping surfaces of the key clamp and are made of 7*910 wear resisting metal. The plate (i l is provided with the shoulder (56 against which the rear edge of the key bit is adapted to rest. The two plates 55 and 65 may be forced into clamping relation by means of a STOW (37 which is secured in the lower c amping plate 55, passes through a periou itrn (it; proviihtd in the plate 63 and is designed to receive awinp nut 69 upon its threaded upper end, which by contact with the plate (33 will force this plate toward the plate 55 in a well known manner. To spread the clamping members when the wing nut (it) is backed off from the screw (57, there is provided in the lower plate 55 a small rubber pin or button 70, which projects from without the plate 55 and contacts with the lower surface of the plate 63 to resiliently force the latter plate upwardly, so that the key may be released from the clamp when the wing nut is turned in the proper direction. A key 71. is shown in dotted lines secured within the clamping plate (t l and (S5 in Figs. 1, 7 and 8 of the drawings.

The forward portion of the lower clamping plate is at the under side rounded out t'ansversely, as shown at T2 in Figs. 7 and 8. to correspond to the shape of the .cer bar 4:3, so that the portion of the bar which lies above the plate :29 will snugly fit within the portion 7 of the plate 55. As shown in Fig. 7, this arrangement will permit the lower plate of the key clamp to lie substantially parallel with and closely adjacent to the upper surface of the plate 2t). A pin 73 is provided within the rounded portion 72 of the key clamping; plate 55 and extends downwardly to engngjrc in. one of the (winnings in the simcer bar 43, so that the key clamp will be secured thcrrbv aga nst accidental transverse nuweinent. l'r'hen one notch has been cut in the key and it is desired to move the key transversely of the cutter to cut the adjacent notch. the clamp is raised until. the pin 73 clears the spacer bar and then is. moved transversely until the pin will drop into the next opening of the bar. This repented each time a new Sit) lno

notch is cut in the key. The clampis provided with a positioning member 75, which consists of a U-shaped member having a bight portion constituting a forwardly disposed beveled head 7 6, and two spaced arms 77 These arms are rotatably mounted upon the pin 59, so that they will always be moved with the clamp, but may be swung about the pin 59 relatively to the clamp D. The positioning member is yieldingly maintained in the position relatively to the clamp shown in Figs. 1 and 3, and in dotted lines in Fig. 7 by two springs 78 and 79, which are, as shown in Fig. 4, coiled about the rod 59and whose ends are secured to the arms 77 of the positioning member 7 5. These springs provide means to maintain the positioning member out of the way of the cutter when once the key has been positioned and clamped within the clamping member 1.).

The indicating gauge mechanism E consists of a shaft 80 which is rotatably supported by the standards i3 and 14. previous ly described, as best shown in Fig. 7. -his shaft is threaded, as shown at 81, and is adapted to slidably receive a disk member 8:2 provided with a hub 83, which is keyed thereon to rotate with the shaft by key member 82. The disk 82 is adapted to be secured in position longitudinally of the shaft 80 by a plurality of lock nuts 84, which are threadedly received upon the shaft upon each side of the disk 82 and hub 83, so that the disk may not only be secured in position, but may be adjusted relatively to theshaft. The shaft extends from the rear portion of the frame without the standard 1% and upon this extended end is secured a knob 85, which may be grasped by the tingers of, the operator to turn the shaft. The disk 82 is provided upon its rear face or the face which is opposed to the knob 85 with a plurality of pins 86 provided with enlarged heads 87. The heads 87, as clearly shown in Figs. 4 and 7, are of difi-erent height, so that they project at different distances from the surface of the disk 82. As best shown in Fig. 7, these pins cooperate with the stop lug 81 upon the carriage C, so as to limit the movement of this carriage toward the cutter. As will be clearly understood, when the shaft is turned by the knob 85, the pins upon the disk 82 are moved so that different pins may be selectively placed in the path of the stopdug 31, so as to vary the position inv which the carriage is stopped to cut notches of different depth in the bit of the key.

A plate 89 is attached to the supporting arm 14 and extends within a recess 90 formed upon the shaft 80 between the arm 14' and the knob 85 to secure this shaft against longitudinal movement in its bearings while still permitting the rotation of the shaft. The knob 85 upon its inner face is provided with a plurality of recesses 91,

which are adapted to cooperate with spring-ln'cssed pin 92 seated in a. socket 5);) in the supporting arm ll. The engagement of the pin within these recesses 91 will yieldingly retain this knob and the shaft to which it is secured in any adjusted position, so that the desired stop pin 87 may be yieldingly retained in the path of the stop lug 31. The knob upon its outer face is provided with a plurality of numerals SH; which serve to indicate the length of the pins 87 and will, therefore, serve to indicate the depth of the notch which the particular pin opposite that numeral will per- .it to be cut in the key bit. The longest pin head 87 is opposite the numeral 1 and the pin heads gradually decrease in length from 1 to 0, so that the shortest one is opposite the numeral 0. It is seen, therefore, that when the numeral 1, for instance, is uppermost, the longest pin will be in the path of the stop 31, so that the shallowcsl notch would be out in the key bit at that time and the deepest notch would be cut when the numeral 0 was positioned uppermost upon the knob 85.

The operation of my device is as follows: In Fig. 10 I have shown at 95 a key blank which is adapted to be placed in my improved key cutting machine, so that notches may be cut in the bit thereof to provide the finished key, as shown at 95 in that figure. The clamping jaws of the key clamp D are loosened up by the backing oil of the wing nut 69 and a key is placed between the two steel clamping plates (34: and (iii with its rear edge against the shoulder (30. The positioning member 7 5 is then swung about its pivot until it is in the position relative to the key clamp shown in full lines in Figs. 7 and 8. The rear bevel face of the head 76 of this member will contact with the front straight bit of the key, so that the key will be forced back in the clamp tightly against the shoulder 66, while the edge 96 of this member will contact with the shoulder 97 upon the key to properly position the key longitudinally of its axis. The wing nut is then turned down so that the key will be clamped tightly between the clamping plates. The key clamp which may be in the position shown in Fig. 7, or in the position shown in Fig. 8 when the key is inserted therein, according to the wishes of the operator now moved transverscly of the carriage until the pin 73 drops into the proper opening 46 to out the first notch at the desired position upon the key bit. it will be understood that the spacer bar has first been turned so that the proper row of openings 46 will be presented upwardly to cooperate with the pin 73, so that the proper spacing of the notches upon the key bit will be effected. The knob 85 is then turn-ed until the selected pin87 is positioned in (ill the path of the lug 31, so that the notch of the desired depth will be cut in the key bit when the carriage is advanced. Vith the pin securely positioned in the proper one of theopenings 4.6, the lever 36 is moved from the full line position in Fig. 5 to the dotted line position shown in this figure by one hand of the operator, while the crank 21 is turned with his other hand provided that power means is not siilpplied for operating the cutter. The rotary cutter will then be turned and the key will be advanced toward the cutter to engage the same so that by continued pressure upon the lever 36 the cutter will operate upon the key until the advance of the carriage toward the cutter will be stopped by contact of the stop 31. with the selected pin 87.

When. the carriage has been stopped by the pin 87 and the first notch has been coinpleted, the key is then moved transversely of the carriage but longitudinally of its own axis by swinging the clamp upwardly about the rod 57 until the pin 73 has been disengaged from one of the spacing openings 46 and then sliding the key clamp along this rod until the pin 72 drops in the adjacent opening which positions the key bit for the cutting of the second notch. The knob 85 is then turned until the numeral which is brought uppermost will signify that a notch ot' the desired depth will be cut and the lever and crank are operated as before and the operation is continued until the completed key is turnedout.

Vihen one key is completed, it is removed from the clamp and a second one is inserted and cut in the same manner. It will be seen that cachliev, and in fact each notch of the key is cut singly and is cut at any desired point upon the bitof the key and is made ol" any desired depth, so that a key bit of any desired configuration may he made 1e giirdless of whether a duplicate of the same is at hand or not.

As the rotary cutters used by dill'erent lock ma'nutacturers are not always of the same width and the bevel ol? the cutting edges is not always the same, it will be lound desirable to so mount the rotary cutter l7 thatit n'iay be easily removed and another izubstituted in its place. In the form of my invention shown in the (ii-airings, I have provided for such a substitution by detachably socuriilg one oi the standards 11 to the bed plate it) of the device by means of the screw ll. It will be ollvious that by the removal. of this screw, the standard 11. may he removed lrom the bed plate and from the end oi the shaft 16, so that by the removal oi the nut '19 the rotary cutter may he slipped oil the shaft and a new one substitutcd in its place and the parts replaced as ln-rlore. It will be seen that this will provide a convenient and satisfactory arrangement for removal of the rotary cutter and the substitution of another therefor.

In SOHIGWllflh the same manner I have provided means by which the stop disk 82 may be removed from its shaft and another stop disk containing pins of other dimensions may be substituted therefor. The standard H is detaehably mounted upon the plate 10" and is secured to the plate by the screw 14:. It will be obvious that by the removal. of this screw the standard, the shaft 80, which is mounted therein, and the mechanism which is secured on this shaft may all be easily removed from the fame. By the removal of the two lock nuts 8% which are positioned between the disk 82 and the front end of the shaft 80, the disk may beren'ioved from the shaft and another one to be in its place. The nuts may "then be replaced upon the shailft and the shaft and standard replaced in position and when the screw 14L a e'ain d tightened in place, the device will be ready for use. By this arrangement I am able to arrange for any desired cutting of a key blank by merely providing interchangeable disks upon which will be mounted. pins 87 of suitable dimensions.

Vhile the broad principles of my invention have been exemplified by a device in which the axis oil. the rotary cutter is lined and the key is movable both transversely and longitrulinaljly of its own axis, so that it may be properly presented to the cutter, it will be understood that the invention is not limited to this exact arrangement, which merely illustrated as a preferred emliodimcnt of the novel principles involved. Moreover, while I have shown and described a preferred form of my invention, it will be understood that the broad principles thereof may be embodied in many modifications and var-iiitlons which will fall within the spirit ol" the invention and within the scope oi the appended claims. 7

What .T claim is:

V '1. A key cutting machine, COHlPllHlllg a cutter and a :arriage slidably movable relatively thereto, a plurality of stops selectively movable into position to contact with the carriage to variably limit such movement, and a key holder mounted on the carriage- 2. A key originating machine compihsing a cutter and carriage movable relatively to each other, means selectively movable into a plurality of predetern'iincd positions to limit such movement and a key holder mounted on said carriage in position to present a key to the cutter.

8. A key originating machine compriiiing a cutter and carriage movable relatively to each other, a plurality of stops selectively movable into position to varyingly limit said movement and a key holder mounted on said carriage in position to present a key tothe cutter.

4. A key cutting machine comprising a relatively movable key carriage and cutt- 1', means adjustable to variably limit the relative approaching movement of said members to cut notches of measured depth in the key bit, and a key holding device mounted on the carriage for movement transversely thereof, and cooperating means on said device and carriage to retain the former in adjusted transverse positions.

5. A key originating machine comprising a cutter; a key holding carriage movable relatively thereto, a plurality of stops selectively movable in position to limit the movement of the carriage and a key holder mounted on said carriage in position to present a key to the cutter.

6. A key originating machine comprising a cutter, a carriage movable relatively thereto, a plurality of stops selectively movable into position to contact with a portion of the carriage at different positions in its movement and a key holder movably mounted on the carriage.

7. A key originating machine comprising a cutter, a key supporting carriage movable relatively thereto, a plurality of stops of different dimensions selectively movable in position to limit the movement of the carriage and a key holder movably mounted on the carriage.

8. In a key originating machine, a cutter, a key holding carriage reciprocably mounted in cooperative relation thereto, means for limiting the movement of the carriage toward the cutter including a pin in the path of a portion of the carriage and movable to inoperative position in a plane at right angles to the direction of movement of the-carriage.

9. A key originating machine comprising a cutter, a carriage movable relatively thereto, a plurality of stops selectively movable into position to contact with a portion of the carriage at different positions in its movement, and extending longitudinally thereof and a key holder mounted on said carriage in position to present a key to the cutter. V

10. In a key originating machine, a cutter, a key holding carriage reciprocally mounted in cooperative relation thereto,

7 neans "for limiting the movement of the earriage toward the cutter, including a plurality of stops of different lengths selectively movable to extend longitudinally in the path of movement of a portion of the carriage and a. key holder movably mounted on the carriage.

11. In a key originating machine, a cutter, a key carrier movably mounted relative thereto,'means for limiting the movement of the latter toward the former including a rotatable member carrying a plurality of stops selectively movable in the path of the key clamping device mounted on the carrier for movement across the face of the cutter.

13. In a key originating machine, a cutter, a carriage reci m'ocably mounted to move toward and from the cutter to present the key bit thereto, and withdraw it ihereirom, and resilient means to urge the carrier away from the cutter.

14. In a key originating machine. a cutter, a reciprocably mounted carriage, said carriage being movable toward the cutter to cause the latter to operate on the key, and resilient means to withdraw the carriage from the cutter at the close of said operation.

15. A key originating machine comprise ing a cutter, a carriage disposed in operative relation and movable with respect thereto, a series of stops arranged to selectively contact with the carriage to permit a measured relative sliding movement between the cutter and carriage means to indicate the movement permitted and a kcyholde-r mounted on said carriage.

16. A key originating machine comprising a cutter, a carriage slidably movable relatively thereto, means to variably limit the movement of the carriage. an indicator to show the movement permitted said carriage. and a key holder n'munted on said carriage for movement transversely thereof to prea'cni dii'lerent portions of the key bit to the roller,

17. A key originating machine comprising a cutter and a carriage movable relative to each other. a plurality oi stops selectively movable into position to varyingly limit said movement, means to indicate the stop selected and a key holder mounted on said carriage.

18. In a. key cutting machine, a movable carriage provided with a key holding clamp mounted thereon for movement transversely thereof, and means to space and retain said clamp in various transverse positions on the carnage.

19. A key cutting machine comprising a cutter, a carriage movable toward the cuiter, a key holder adjustable on the carriage transversely of the cutter, and means to retain the key holder in adjusted position said holder being movable out oi engagemenf with said retaining means for adjustment to another position.

20. A key cutting machine comprising a cutter, a c: rriagc movable relatively thereto. a spacer bar on the carriage and a. key holding clamp adjustable on the carriage along Elli loo

llu

till

said spacer bar and movable into and out of engagement therewith.

21. A key cutting machine comprising a cutter, a carriage movable toward and from the cutter, a key holding device n'ioupted on the carriage and movable transversely of the cutter, and spacing means to adjust the transverse movements of the key holder, said key holding device being movable into and out of engagement with said spacing means.

22. A key cutting device comprising a frame, a spacer bar carried therein, means adjustable. along said spacer bar transversely of the carriage, a key clamp carried by said means and co-operating means carried by said spacer bar and adj ustable means to retain the latter in adjusted position.

23. In a key cutting device, a cutter, a key carrier slidable toward and transversely of the cutter, a spacer bar to regulate said transverse movements and a key holder mounted on said carriage in position to pre sent a key to the cutter.

24. A key cutting machine, provided with a movably mounted key holding clamp, said clamp being mounted for moven'ient transversely and longitudinally of the machine to present the key bit to the cutter, and means to space and retain said clamp in various transverse positions to determine the position of the notches cut in the key bit.

25. In a key cutting machine, a frame, a cutter, a carriage movable toward and from the cutter, a key clamp supported thereon and adjustable transversely thereof, and means to set and retain said clamp in predetermined spacedpositions of adjustment.

26. In a key cutting machine, a frame, a cutter, a key holder adjustable transversely thereof and a spacer bar on the frame to retain said holder in adjusted position, said holder being; pivotally mounted to be swung out of engagement with said spacer bar.

27. In a key cutting machine, a frame, a spacer bar mounted thereon, a key clamp adjustable longitudinally oi the spacer bar and cooperating means on said clamp and bar to space said clamp in various positions transversely of the frame.

28. In a key cutting machine, a frame, a key clamp adjustable transversely thereof, and a spacer bar mounted on the frame below said clamp, cooperating with said clamp, and provided with spaced meansto retain said clamp in adjusted positions.

29. In a key cutting machine, a frame,a key clamp adjustable transversely thereof, a spacer bar cooperating with said clamp and provided with a plurality of sets of spaced means to retain said clamp in adjusted position, said sets being arranged to vary the adjustment of said clamp.

30. In a key cutting machine, a frame, a key clamp adjustable transversely thereof, a

spacer bar cooperating with said clamp and provided with a plurality of sets of spaced means to retain said clamp in adjusted position, the means of one set being spaced differently from the means of another set, said bar being movable to bring a selected set into operative position.

31. In a device of the class described, a rotatable cutter and a key holder relatively movable with respect to each other to present different portions of the bit of the key to said cutter, means to retain the key holder in adjusted position while a i'iotch. being cut in the key, said holder being swingable about an axis parallel to the axis of the cutters out of engagement with said means.

32. In a device of the character described, a cutter and a key holder relatively movable with respect to each other to present dittl'crcnt portions of the bit of the key to said cutter and a spacer bar cooperating with said holder to space and retain it in adjusted position, said key holder being swingable about an axis transverse to the cutter out of engagement with said spacer bar.

33. A key cutting device comprising a cutter, a key carrier slidable toward and transversely of the cutter, a spacer bar to regulate and retain the carrier in adjusted transverse positions and means to limit the movement of the carrier toward the cutter.

34. Ina key cutting device, a cutter, a key holder, movable relatively thereto, and means to retain said key holder in equally spaced positions relatively to said cutter to present equally spaced points on the bit of a key to said cutter, said means being arranged to vary the spacing of said points of the key bit presented to the cutter.

35. In a key cutting machine, a cutter, a key holder adapted to be advanced across the cutting edge thereof to present dittercnt portions of the bit of the key to said cutter, and means providing for the advance of the key holder in equal steps, said l;ey holder being swingably movable out of engagement with said means about an axis transverse to the cutter.

36. In a key cutting machine, a cutter, a key holder adapted to be advanced across the cutting edge thereof to present different portions of the bit of the key to said cutter, and means providing for the advance ot' the key holder in equal steps, said means being adjustable to vary the length of said steps.

37. A key originating machine comprising a cutter, a key holder movable transvcrsely and longitudinally relatively thereto to present different portions of the key bit to the cutter and means engaging said holder for varyingly spacing said transverse movement to vary the distance between the notches cut in the key bit.

38. In a key cutting machine, a cutter, a carriage movable toward and from the cut ter, and av key holder movable on the carriage transversely or" the cutter, means to limit the movement of the carriage to a predetermined extent, and means to set the key holder in predetermined positions upon a spacer bar cooperating therewith and pro vided with a plurality of sets ot spaced retaining members, the membe of one set being diiierently spaced from t ,se of another set, and means for yieldingly retaining said spacer bar in position to render operative a selected set of retaining members.

41. In a-key cutting machine a key holder, a spacer bar cooperating therewith and provided with a plurality of sets of spaced rerainingmembers, the members of one set being differently'spaced from those of another set, said bar being rotatable to place a selected set of retaining members in operative position.

42. In a key cutting machine, a movable carriage, a key holder movable thereon, and provided with a stop pin, a spacer bar mou nted upon the carriage and provided with spaced openings to receive said pin.

43. In a key cutting machine, a movable carriage, a rod carried thereby a spacer bar, and a key holding clamp swing-ably mounted on said rod to be moved in and out of engagement with the spacer bar.

44. In a key cutting machine, a key carriage, a rod carried thereby and a key holding clamp mounted to slide longitudinally of said rod, a spacer bar with which said clamp is adapted to engage and said clamp being rotatable about said rod into and out of engagement with said spacer bar.

45. In a device of the class described, a key holding clamp and a U-shaped positioning member adapted to be swungover the n'ioi'ilhot the clamp to position a key therein, so that the bight portion of said member ei'igages the bit of, the key in said clamp.

41:6.In a device of the class described, a key holding clamp and a positioning member adapted to be swung over the mouthoi the clamp to contact with the key bit substan tially along the entire edge thereof, and position a key therein.

l7. In a device of the class described. a key carriage, a key holding, clamp n'iovably mounted thereon, and a positioning member movably mounted to swing to a position over the mouth of the clamp, and. contact with the key along the entire bit thereof.

48. In a key cutting machine, a cutter, a

key holding clamp mounted in position to present a key to a cutter, a key liiOSll'iOlllIljJ, member swing able over the (d re oi the key bit and between the bit and the cutter and contact with the key along the entire bit thereof to position the key in the clamp.

1-9. A key holding clamp and a key positioning member cooperating therewith, said member having an edge to cooperate. with a shoulder on the key and a beveled face to cooperate with the key bit.

50. A key holding clamp having; a pivot ally mounted jaw, and a movable key positioning member pivoted coincidcnlly with said jaw.

51. A key holding clamp and a key positioning men'iber movably mounted relatively thereto, said member being movable lo position a key in the clamp and. means for nor-- mally holding said member in inoperative position.

52. A key holding clamp and a key positioning member movably mounted. relatively thereto, said member being movable to posi tion a key in the clamp and a spring for normally holding, said member in inoperative position. i

53. In a key cutting machine, a frantic, a cutter, a car. ..;i;e mounted thereon lor horizontal movement, said carriage being; yieldingly urged in one direction, a cam for mov ing said carriage in the opposite dirrction and means to limit the movement oi? the carriage toward the cutter.

54-. In a device oi the class described a frame, a cutter, a carriage mounted thereon for horizontal movement, a lever to move said carriage in one direction, a spring" for moving said carriage in the opposite direc tion and means to variably limit the movement of the carriage toward the cutter.

55. In a key cutting machine, a frame, a cutter mounted on the frame, a carriage mow able toward and away :l'rom the cutter, a key holder mounted on the carriage and movable transversely thcrcol', and a pluralilv o'l stops movable across the path o l the carriagre to bring a selected stop into position to limit the movement oi' the carriage toward the cutter.

56. In a key cutting nuu-hinc, :1 culler. a carriage movable relatively thereto, a kcv holder movably mounted relatively to the carriage and. spacing means to retain said key holder in adjusted positions.

5'7. A key cutting device, comprising a cutter, a key :arricr slidable toward and transversely oi? the cutter, a spacer bar to retain the carrier in tltljlU-ltttl transverse position, and means to limit the movement of the carrier toward the cutter, comprising :1 rotatably mounted disk having on one 'l'acc thereot a plurality of stop members.

538. A key cutting device, comprising :1

IOU

cutter, a key carrierslidable toward and transversely of the cutter, a spacer bar to retain the carrier in adjusted transverse position, and means to limit the movement of the carrier toward the cutter, comprising a rotatably mounted disk having on one face thereof a plurality of stop members, and means to rotate said disk to bring said members selectively into operative position.

59. A key cutting device, comprising a cutter, a key carrier slidable toward and transversely of the cutter, a spacer bar to retain the carrier in adjusted transverse position, and means to limit the movement of the carrier toward the cutter, comprising a rotatably mounted disk having on one face thereof a plurality of stop members, means to rotate said disk to bring said members selectivel Y into 0 eratilve osition and means Ii 7 j to indicate the selected member.

(30. A key cutting device, comprising a cutter, a key carrier slidable toward and transversely of the cutter, a spacer bar to retain the carrier in adjusted transverse position, and means to limit the movement or the carrier toward the cutter, comprising a rotatably mounted disk having on one face thereof a plurality of stop members, and

a stop member indicator mounted to rotate with said disk.

61. In a machine of the character described, the combination of a rotatable cutter, a carriage movable toward the cutter, a spacer bar, and a key holder swingably mounted on the carriage to move into and out of engagement with the spacer bar.

62. In a key cutting machine, a cutter and a key holder movable relatively to each other, stop means rotatably adjustable to positions to variabl limit said movement and means to yiel ingly retain said stop means in adjusted position.

63. A key originating machine having a frame, a carriage movably mounted thereon provided with a key holding clamp, said clamp being transversely movable relatively to the carriage to present different portions oi the key bit to the cutter, and cooperating adjustable means on the frame and carriage to variably limit the movement of the carriage toward the cutter to cut a notch of the desired depth at any point along the bit of the key.

In witness whereof, I have hereunto set my hand this 21st day of March A. 1)., 1921.

JOHN H. SHAW.

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