US1865060A - Service recorder - Google Patents

Description

5 Sheets-Sheet 3 ,7 1 h 1/ a mm m 3 am J W, w

June 28, 1932. c d

' SERVICE RECORDER Filed March 25. 1921 Stand, 3

June 28, 1932. H. R. cooL 1,865,060"

SERVICE RECORDER Filed March 25, 1927 5 Sheets-Sheet 2 June 28, 1932. r H. R. COOL 7 1,865,060

' SERVICE RECORDER Y Filed March 25. 1927 5 Sheets-Sheet 3 Patented June 28,1932

' UNITED STATES PATENT: OFFICE HENRY nosE COOL, or cLEvE Am), onro, assreno a'ro THE SERVICE RECORDER comrm, or cLEvELmn, 01110, a coaroaa'rrou or 01:10

sEav'IcE EEconnEE Application fl ed. Iarch 25, 1927. Serial No. 178,347.

This invention relates to service recorders such as are used for producing a record of the periods of dut or idleness of a machine or other device. guch recorders, for exam- ;ple, are applied to taxi cabsor delivery trucks, or. to machines of various types set vices. The invention is an improvement upon the recorder shown, described and lclaimed in my prior Patent No. 1,493,067, granted May 6, 1924.

The object of the present invention is generally to improve the construction of said prior recorder, and in particular to'improve ithose parts having to do with the attachment and operation of the record, as well as those which produce the marking thereon. It also aims to improve the mounting of the various parts'i'n he recorder casing, sothat the are firmly secured and are always placed an replaced in the same position. A further object is to improve the casing parts, such as the hinge thereof, to avoid possible shock and jar to the delicate internal mechanism, as well as to so construct and arrange the parts as to secure delicacy ofmovement of the operating pendulum and protect its pivotal mounting from lateral or other strains which might interfere with its operation or curtail its useful life.

A further object of the invention is to adapt the recorder to other uses where the stylus will be actuated other than by vibration or g'ar, enabling the recorder to be used 1 to produce a record of opening and closing movement of a .door or for other uses, all as will more fullyappear.

Further'objects of the invention are inv part will appear more Fig. 14.

1 Figs. 3'

a front elevation of the recorder in the position in which it is applied in use, the casing being closed; Figs. 9 and 10 are cross sec 'tions on the line 9-9 and 10-10, Fig. 7, Fig. up on foundations in a shop, or to other de- 11 is a detail section on the line 11-11, Fig. 1 Fig. 12 is a detail section on the line 12-12, Fig. 11; Figs. 13 and 14 are front elevations of thestylus carr ing portion of the casing, and showing -mo ifications in the operating mechanism; Fig. 15 is a detail sectional plan View on the line 15-15, Fig. 13; Fig. 16 is a detail sectional elevation on the line 16-16, Fig. 13; and Figs. 17 and 18 are detail sec tional views on the lines 17-17 and 18-18,

In many respects the recorder shown in the drawings is similar to that of my prior patent referred 'to. For example, it comprises a suitable casing, including a body 1 adapted for securementto a support, such as by being provided with screw holes 2, and to which is hingeda, hollow cover 3, chambered to receive a clock mechanism indicated generally at 4, the final operating shaft 5 of which sup- .ports and turns the circular record 6, which may be like that described in my prior patent. Depending upon' the particular use to which the instrument is put the clock mechanism may be geared to turn the record a com- 'plete revolution .in one, twelve or twenty-four hours, or any other period, with increasing accuracy or fineness of indicat ons as the duration period is decreased.

. The mark on the record is produced by a pointer or stylus 7 attached to the pendulum 1 i 8 andwhich stylus presses the record against a yielding backing member.

Coming now to theparticular improvements of the present invention, the backing member is shown best in Figs. 2 and 6. It is. in the form of a small hollow cup or thimble 9 having a smooth outer face 10 at its closed end against which the paper record pressed by the stylus, the other open end of the thimble having an annular external rib 11 and a series of. short longitudinal slots 12, forming in effect a series of Ion 'tudinal arms, the metal of the thimble belng'resilient. The

cavity in said member receives a light compression spring 13. These two parts, thimble and spring, are assembled, and the spring arms are squeezed together so that the thimble can be introduced endwise into an opening- 14 laterally slotted, as at 15, at its bottom. One or more of the ribbed spring arms expand outwardly into said slot 15 and limit outward movement of the backing thimble, but permit the latter to be urged outwardly with free sliding motion, but with guidance by the walls of the opening 14 so that the record receiving face 10 is always held parallel to the plane of the record disc. As a consequence said backing member yieldingly holds the record against the pressure of the stylus on its opposite face.

The paper record is supported upon the clock spindle 5 to rotate therewith and the present mechanism is arranged for quick and simple attachment and detachment of records, but in a manner to avoid the necessity of detaching any parts and thereby avoids loss. As shown. the clock spindle 5 is provided with a shoulder 16 forming a seat against which is screwed the threaded hub 19 of a disc 1'? having peripheral lobes or ears 18 to enable it to be readily grasped and turned with the fingers. The exposed face of the disc serves as a seat for the paper record 6. which is held in place on its seat hv two like arms 20 each having Divot ears 21 confined in a recess of the hub 19. said arms at their inner ends being bent and extending -with the disc. However. said arms may be grasped at their ends and turned up to the dotted line position Fig. 7, or as shown in Fig. 11. enabling the paper record. which is perforated at its center to slip over the hub 19. to be removed and another one put in its place. after which the arms are turned down again to clamping position.

The disc 17 including its central hub. springs 22 and arms 20, constitute a single unit, the parts of which are not detachable from each other. It is not removed from the clock in changing records. but may be unscrewed from spindle 5 to remove the clock from the case. It also serves as the winder for the clock. it being understood that the lobes 18 are used for turning it for this purpose.

Coming now to the clock movement. which is conventionally shown as of cylindrical form, said movement is secured detachably in the casing so that it may be taken out for repairs or the like. It licsadiacent a. flat wall 23 of the casing, which is exposed at the front when the instrument is in use. This wall may serve as a name plate or identifying device by providin it with any legends, such as a number or the name of the manufacturer, and is of a diameter large enough so that it rests against a shoulder 24: ofthe casing. Its periphery is provided with a series. four being shown, of recesses 25 adapted to pass over lugs 26 cast integral with the casing and under cut or recessed, as at 27. One of the lugs 26 and its cooperating recess 25 are larger than the others, so that the disc 23 may be inserted only in one position. Therefore. if the plate bears legends on its external surface they willalways be upright when the casing is properly attached to a support. Having inserted the plate in its seat on shoulder 24 a split spring rin 28 is snapped into place in the under cut recesses 27, as shown in Fig. 10,

thereby removably locking the plate in place.

Said ring and the peripheral edges of the plate may be coated with wax or other suitable material fused into place, and adapted to melt at any temperature high enough to be injurious to the delicate clock mechanism so that displacing of the wax or other material will indicate to the manufacturer that a returned device has suffered improper use. A cushioning disc 29 of felt or the like may be placed between the plate 23 and the clock mechanism. Thelatter is removably held in the casing in like manner with the name plate. to wit, by being provided with a circumferential flange 30 recessed at intervals to pass over lugs 31, one of which, marked 31a, is extra large, the movement being likewise held in place by a spring ring 32. The large. lug 31a insures that the clock movement will always be put in place in the same position. which is particularly valuable because some clock movements. such as for different duration periods. may be of dill'erent diameters, and the final shafts 5 thereof may be located eccentrically thereto, but each such movement may have its external flange so formed that when the movement is inserted into the casing in its one correct position the final shaft 5 and hub 19 will always be located centrally-of the casing and properly relate the record to the stylus.

The hub 19 of the winding disc projects beyond the parting or separation plane between the two casing members, as shown in Fig. 7, and consequently enters the chamber or recess in the body 1. Indeed, it may extend beyond the plane of movementof the pendulum. As a consequence, the pendulum 8 is especially formed so that its movement cannot be interfered with by the hub 19 or any part carried by the hollow cover 3. It is of open form with two like side arms 35 separated by a space 36 in which the hub 19 .is received, said arms being connected at their lower ends by a larger mass or area 37 of the metal and at their upper en ls by a cross bridge 38 in which the pivot pin 9 is mounted. The latter may be a hard metal shaft coned at both ends and cast in a somewhat thicker boss of the'pendulum, such as by a die casting operation which will produceaccurately shaped and balanced parts. The mounting for the pendulum is of a character to permit adjustment of its pivot to take up pla andwear and to produce accurate centering and delicate movement of the stylus in one plane only. Specifically the pendulum pivot is carried by a supporting member 40 made of a single 'ece of resilient metal in strap form bent bac k. upon itself, as at 41, to form a body of double thickness clamped by the screw 42 in a trough-like seat 43 of the body 1, the two arms of the strap then diverging into U-form as shown inFig. 7 and being separated to receive between them a compression spring 44 through which passes an adjusting screw45. Bytightening up this screw the arms are caused to approach while the spring and the resiliency of the arms separate them when the screw is unscrewed.

This pivot mounting is specially formed for accuracy. It is of'hard resilient metal to reduce wear and permit adjustment.

After being shaped to the form shown in the drawings it is drilled to form two small holes 46, the drilling being accomplished by one operation -with the drill passing clear through. This insures ali ings. A small hardened steel tool shaped a 1 good deal like the pivot 39 is then introuced between said arms with its pointed ends entering the holes and the two arms are pressed. together to swagethe metal at the,

oles and thereby form similar opposed conical seats. In the final assembly the pendulum pivot itself is introduced into position and the two support arms are lightly tapped together so that each pivot serves as the final form for its own seats in its support.

By proper adjustmentthis arrangement produces a very satisfactory and delicate pivotal mounting withproper adjustment to take up all lost motion and insure free and easy swing of the pendulum in its own plane. Moreovezgthe pendulum and its supporting.

member 40 may be assembled and handled as a unit, all adjustments thereof being made to the finest degree beforev the unit is assembled in the casing, which is accomplished by inserting the supporting member with the pendulum attached thereto into the seat in the casing and tightly'screwing up the screw 42. When the parts areassembled, as shown 1/ in Fig. Lthe'head of the adjusting screw 45 is accessible for adjusting or re-adjusting the tension on the pivot bearing.

Obviously free pendulum motion must be permitted, but at the same time it must be limited, for which purpose the casingbody 'is provided with bumper means, shown as a. post -47-'on which is mounted" a cushion,

.suclr as'j'a rubber washer 48. This bumper bumper.

ment of openand is purposely located on body 1 at such va point that when the pendulumcontacts with it, pendulum motion is stopped, but without the production of any lateral strain or stress upon the pendulum pivot. may be accomplished only by proper dis tribution of the metal of the pendulum around its own pivot and with due regard for the desirable location of the bumper means. The pendulum is therefore specially shaped, as shown for theparticular location shown for the bumper and would be otherwise shaped for every other location of the In the present case the pendulum is especially designed and shaped to provide the necessary opening for. the hub 19 and for bumper 48 and to also concentrate a substantially large mass of metal near its bottom to produce sufiicient propelling force,

and in addition is soshaped asto properly distribute'the metal with reference to the bumper. In the particular arrangement .shown'inthe drawings the desired results are. accomplished by making the side arms 35 ofthe pendulum relatively narrow or of light weight and concentratingthe heavier. mass of pendulum metal at the lower ends of said arms, so that the center of gravity of the pendulum as a whole is much nearer This to its lower endthan to its pivot, thereby securing the necessary propulsive force for operating purposes, and the bumper is loca ted within the recess 36 of the pendulum at approximately and even a little below, if anything, the zone' of travel of the center of gravity of'the bumper.

It remains to describe the lock and hinge mechanism which is of special character dcsigned particularly 'to protect the delicate clock mechanism enclosed within the casing. For example, the hinge shown in detail in lol Figs. 3 and 4 is arranged to protect the clock against violent impacts. The clock is mounted in that art of the casing, the cover, which is 'droppe down when the casing is opened,

and if the hinge were loose the clock might v be subjected to unnecessary jars. The hinge therefore comprises a hollow cylindrical eye 50 on one casing member, such as the base, and two hollow eyes 51 on the other casing member. "The opening in eye. 50 is larger than the hinge pin 52, and in the extra space thereby provided are mounted two small sleeves 53 with a compression spring 54 between them, while friction washers 55 are located between the eyes andareprovided with projections 56 entering recesses of the eyes to prevent the washers from turning. 'VVith thisarrangement the compression spring 54," which is inserted-"under tension,

exerts frictional efi'ect upon the washers, and

therefore-in. the joint, suflicientfto hold the hollow cover in any osition to which it may be turned. It canv moved down to the horizontal position and the friction in the jloint is sufficient to support it against further A lso, the joint around the edges of the casing is sealed against dirt or moisture by providing sealing means, such as a small rubber tube 57, lying in a groove of one member. such as the base, and projecting outwardly from its face for compression by the other member when the casing is closed. The lock is of cam form to force the casing parts together to a tight seal with the sealin-g member 57 compressed. As shown the lock is of the Yale or any like type consisting of a barrel 60 having a lateral offset 61 pushed into a recess of the cover from its inside, the end of the barrel being exposed, as shown in Fig. 8, for insertion of the key. The parts of this lock are assembled in the casing as a unit by inserting them into place with the offset 61 lying between two small T-shaped plates 62 (see Figs. 5 and 7) the upper ends of which are bent over as at 63 to hold the lock parts in' position. These plates are made of T-form to avoid any necessity of rights or lefts. The lock of course includes a member rotated by the key and having an inwardly extending portion 64 to which is attacheda cam plate 65 adapted to be moved into a recess 66 of a small post 67 of the casing body, and said plate 65 is slightly beveled on one edge as shown at 68, Fig. 1, so. that when it is turned to locking position it draws the parts of the casing together to compress the sealing washer and secure a tight fit.

Only brief description of the operation of the recorder is necessary. With the casing closed, as in Fig. 7, and applied to the device whose vibrations are to be recorded, the clock turns the disc record. causing its outer portion to move between the yielding backing member and stylus. As long as the device is idle the stylus lies at rest and its track upon the record is a narrow line describing a circle around the axis of the record. However,when the device is put into operation its vibrations cause oscillations of the pendulum with movement of its stylus back and forth across thenormal path of its narrow trace, with an lncrease 1n the width of the trace which continues so long as the device is in operation.

Figs. 13 to 18 inclusive, illustrate modifications where the recorder has been adapted for special uses. Referring first to Figs. 13, 15 and 16, the recorder is shown applied in use for producing a record of the opening and closing movements of a door, for example,-the door to a store. or other place where the proprietor desires to know at what time the door has been opened or closed, enabling him to check on the appearance for duty of employees who ought to arrive early,as well as upon the closing time.

In the f rms shown in both Figs. 13 and 14, it may be assumed that the clock and record carrying half of the casing is identical with the form shown in Fig. 1. The modifications are merely in the manner and means of operating the stylus.

In Fig. 13 the stylus 7 is again mounted on the same pendulum member 8, but .the.

latter is held under the influence of a leaf spring 90, one end of which is clamped b the set screw 70 in a slot in the post 47, the free end of said spring bearing upon one of the arms of the pendulum.

The back of the casing is provided with two slots 71 through which extend posts 72 on a slider 73 working in a recess in the back of the casing and having a small lateral offset'74. This slider with its posts may be inserted into position in either one of the slots 71 to adapt the device for right or left hand operation, the spring being likewise adjusted to the proper right or left position, as indicated in dotted lines, Fig. 13. With the slider inserted, one of its posts 72 lies adjacent the side of the pendulum 8 and the slider may be suitably held removably in operating position, such as by the wire staple '7 The device is fastened to a door 76 as shown in Fig. 15, with the offset 74 entering the space between the door and casing 77 at the hinge joint. When the door is closed, as in full lines, the pendulum 8 is pushed over to its extreme right hand position, Fig. 13, but when the door is opened, as in dotted lines Fig. 15, the spring 90 ri oves the pendulum and the slider 73 to the left hand position, as shown in Fig. 13, thereby causing the stylus toproduce its radial mar on the record.

"With this arrangement, if the door is opened and closed frequently during the day, every opening and closing movement will produce a radial mark on the record and, indeed, if the time period of the record'is properly proportioned each individual door opening and closing movement can be identified with the time when it occurred. If the door is opened infrequently, as in the summer at a gas filling station, where the door might be opened once in the morning and closed once at night, the record would consist-of two radial lines connecting two circular arcs with adifFere-nce in radius, so that a record of this kind would indicate not only how frequently the door was opened or closed, but the duration of its open and closed positions.

The arrangement shown in Fig. 13 is a simple adaptation of the same type of recorder shown in Fig. 1 but for this special door operating use. enabling the same parts to be supplied without-any necessity of special dies for new parts. This instrument. shown in Fig. 13, is, of course, useful for door operation as described, and also for recording ibrations, because by omitting or removag the spring 90.and the slider 73, the penduim 8 becomes freely swinging and is useful or vibration recording purposes. If such nstruments are made in quantities, simpler peratin parts for the stylus may be prodded. I or example, Figs. 14: 17 and 18 ll'ustrate a modification in which the stylus 7 s carried by a short arm projecting from t V-shaped lever having two like arms 81 oth equipped with elongated slots 82 to reeive a pin 83 on a sliding rod 84 working 11 openings in guides 85 on the casing and raving an extension 86 passing through the iide casing wall and adapted for operation sither b hand or by any attachmentconiected t ereto. The two arms 81, together with the provision of two sets of guides 85, 35a on both sides of the casing, adapt this device to be worked either right handed or left handed; Fig. 17 illustrates in detail the pivot mounting or this special lever, which is merely a threaded post 87 on a boss of the casing and passing through an eye 88 of the lever.

What I claim is: I,

1. In a vibration recorder, clock mechanism having an operating shaft, unitary rec- HENRY ROSE COOL.

signature.

ord member supporting and driving'means adapted for attachment to said shaft, compris ng a record member supporting plate carrying a hub formed for attachment to said shaft, and oppositely disposed arms hinged to said hub and each having two positions parallel and normal to said plate, and

s ring means adapted to hold said arms-in either of said two positions, said arms when parallel to the platebeing adapted to engage at their outer ends a record member supported by said late and clamp it thereto and when exten mg normally from said plate being located wholly within the outer bound 8 anes of said hub and adapted to pass through a record member sleeved over the hub to seat on the plate. a Y W 2. A vibration recorder of that type in which the record member is moved between a, vibrating stylus and a yielding back'ng member, comprising a casing containing sai stylus and record member, said casing having an opening opposite the stylus and extending normal to member, and a yielding backing member movable in'said opening and presentin to the record member a flat receiving sur ace parallel to its plane.

3. A vibration recorder of the t pe described in claim 2, wherein the backing member is of skirted form, its skirt being ided in the casing opening. 4. A vibration recorder of scribed in claim 2, wherein the backing member is of skirted form, with its skirt guided in the casing opening, and the casing i ing is provi ed an' inner shoul erand the type de-J the plane of the record OPQII-

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