US1164945A - Type-writing machine. - Google Patents

Description

{ w. A. LORENZ.

TYPE WRI'I'INGMACHINE.

APPLICATION FILED APR.I6,1909.

Patented Dec, 21, 1915.

2 SHEETS SHEET I.

W. A. LWENZ.

- TYPE wmrmc momma.

APPLICATION FILED APR. 16, I909.

Patented Dec. 21, 1915.

Z SHEETS-SHEET 2.

INVENTUH UNITED STATES OFFICE.

WILLIAM A. LORENZ, OF HARTFORD, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO THE NOISELESS TYPEVJBITER COMPANY, OF MIDDLETOWN, CON- NECTICUT, A CORPORATION OF CONNECTICUT.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

iatented Dec. 21, 1915.

To all IIIZOIIL it may concern Be it known that I, \VILLIAM A. LORENZ, a citizen of the l nited States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in T yperiting Machines, of which the following is a full, clear, and exact descriptiomsuch as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to typewriting ma chines, and one of the objects thereof is to provide new and in'lproved means for adjusting the platen with respect to the printing plane.

Another object is to provide, in a machine employing silentlyo ierating type bars which have limited movements in the direction of the platen, means whereby the platen may be moved to the proper positionto receive the printing pressure of the type bars when the printing is to be effected upon a plurality of impression sheets.

Another object is to provide means for holding'the platen in fixed position after adjustment.

A further object is to provide a new and improved gage for measuring the thickness or thicknesses of a sheet or sheets of paper upon which printing is to be ellccted.

Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly consists in. the features of construction, combinations of elements and arrangement of parts which will be exemplified in the construction here inafter setforth. and the scope of the appli cation of which will be indicated in the tollowing claims. 4

In the accompanying drawings, wherein is illustrated one of several possible embodiments of my invention, Figure 1 is a plan view of a portion of a carriage of a type writing machine sufficient to illustrate the. presentinvention; Fig. 2 is a side view of Fig. 1. partlyin section; Fig. 5 is a sectional view taken on line 3- Fig. 1; Fig. 4 is a front elevation 01 the let'thand end of the carriageshown in Fig. i: Fig. 5 is a sectional view taken through a t vpewriting machine, showing the carriage in position, and one of the type actions; Fig. 6 isa sectional view, on an enlarged scale, of the printing platen, the view being taken on line (3-6, Fig. 1: and Fig. 7 is a similar view of a di lt'erent embodiment of'printing platen.

Similar reference characters refer to similar parts throughout the several views of the drawings.

Referring now to the drawings, 1 rep resents a portion of the framing of the machine supporting the bed or top plate :2 which, in turn, supports the type bars 3 and across which they are projected. The type-bars are guided to the impression point by means of a cap-plate 4 and guide pins 5 and G and are connected by means of links 7 with a toggle cam 8, pivoted at 10 in 'an adjustable block 11, the latter being su 'iported upon a ledge 12 formed upon the framing of the machine. Clamp-screws, such as shown at 13, fasten the blocks 11 in position after adjustment, which may be effected by means of the adjusting screws 14. The aims 8 are oscillated to project the typebars to impression by means of lovers 15 and links 16 which connect them with the key levers. one of which is shown at 1-7 pivoted upon a support 18. The above-described actuating i'ncchanism for the type-bars is of the general character of that illustrated in the patent to I. Kidder, No. 567,241, September 8, 1896, and the construction thereof is such that each type-bar has a pre determined throw in the direction of the platen, the aces of the several types assuming a common plane at the termination of The carriage is supported upon balls rimwar be shifted verlicallv for dillerent case f H 4.9" pi |ntin and din run this opeialion ioc a slides up and down upon the vertical face Q8 of abutment l and the carriage, when letter spacing movements are ell'ected, slides in the block 27. \\'lll('ll is held against lateral movement.

The printing platen l lis attached at its ends to slides :15 and 36 which are dovetailed in the side pieces 2 and 21. of the carriage, this dovetailed construction bein shown at 37 in Fig. l. platen-roll 3 has its shaft 40 jonrnaled in slides 35 and 3G and the platen has a concave back which rests against the platen-roll. Links ii and Mengage the shaft 40 of the platen-roll, one on each end, and by means of studs 43 engage cam slots it in the side pieces and 21 of the carriage. These studs are engaged by forked arms 45 attached to an oscillating or rock-shaft l6 extending across the car riage and journaled in the side pieces thereof. To the outer ends of shaft it; are secured indicator hands 47, the outer ends of which arev provided with indicators-l8 which cooperate with curved, graduated indices '50 formed upon the carriage.

The operation of this structure ma y now beunderstood. l ormally the platen lies in proximity to the plane assumed by the faces of the several types when they are projected to impression, so that said type-faces will just barely contact therewith. So located, the platen is in proper position to permit the printing to be effected upon a single sheet of paper positioned thereon. *When it is desired to adjust the platen to or from the zero position of the faces of the type-bars the operator inserts the desired amount of paper in the carriage and in front of the printing platen 31 Then the pointers 48 50 are shifted to the number which corresponds to the number of sheets inserted in the carriage. This, of course, assumes that the graduation has been mrde in conformity with a standard thickness-of paper so that each number on the scale will correspond to the number of sheets inserted in the carriage. By moving the pointer to the corresponding figure on the scale, the roek-shaft 46 and arms 45 will be oscillated, carrying the studs 43 and links 41 upward, the studs following the curvature of the cam grooves 44, thereby drawing the two slides and 36, the platen roll and the printing platen 34 backward to the desired extent. The distance of the putting platen. from the faces meager:

' separated by first of the types will then be that desired for printing upon the particular number of sheets inserted.

The cam-gro0ves 44, xbeingdisposed at a slight angle to the direction of movement of the platen and associated parts, will prevent recession of said parts during the printing operation. i

I have also provided paper gaging devices on the carriage, which may be located at one side of the carriage or at both sides thereof, as shown in the drawing. being similar one only need be described in order to impart a clear understanding of this feature of the invention. This gage comprises fingers or jaws 51 and 52, one of which is the'other upon the carriage proper. These jaws are provided with opposed faces 53 and Si between which the paper to be measured may be inserted. In Figs. 1, 2 and 3 of the drawings, the gaging faces 53 and 54 are shown in contact or closed, and when in this position the indicator-hand 47 will also be in the zero position, as will be the printing platen 3- in using this device, the desired number of sheets are placed between the gaging faces 53 and 54; which have been pushing back the indicator-hand l7. the paper until the face 53 just gages the thickness of the paper. The paper is then slipped from between the jaws and inserted in the carriage, as shown at 55l*ig. 5. The

distance to which the platen has been moved back fronithe position shown in Fig. 2 will then be the correct one for printing, leaving a space between the type-faces and said platen which will cause the proper impression upon the several sheets of paper to be produced.

Referring now particularly to Fig. 6 of the drawings, a plurality of recesses 56 leaving narrow bearing surfaces 57 which'rest againstthe platen-roll 38. The platen-roll being construeted of relatively hard material, preferably hardenedrubber, it is desirable to form these recesses in the platen in order that the latter may give way or be pressed back slightly in order to cushion the blow of the printing operation, thus slightly reducing the noise.

In Fig. 7 a modified form of printing platen is shown in which the platen is provided with a Hat front face 58, the platen being made very thin and bearing against the platen-roll 38 at its middle portion 60, and at. the edges 61 and (52, leaving recesses (53 and roll. This platen will, therefore, have three supporting surfaces against the platan-roil during the printing operation and will give way slightly, thus operating to cushion the blow and reduce the noise.

These devices mounted upon the slide 35'and' The faces are then closed upon the platen M is provided with between the platen andthe platen- It will accordingly be seen that I have provided mechanism of the above type adapted to attain, among others, all the ends platen with respect to the normal printing plane.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Having described my invention, what 1 claim as new and desire to secure by Letters Patent is:

1. In a typewriting machine, in combination, a pressure operated type bar, a fixed abutment on the frame of the machine in line with the movemept of the type'bar at substantially the end ofaits stroke adapted to take up the thrust thereof, a paper car-,

rier movable relatively to said abutment,

and means associated with said carrier for.

moving a portionthereof toward and from said abutment relatively to the normal printing plane.

2. In a typewriting machine, in combination, a plurality of type bars having a limited path of travel to a normal printing plane, a fixed abutment, a carriage adjacent said abutment and held against rearward movement thereby in the direction of movement of said type bars, and a paper carrier mounted on said carriage and movable relatively to said abutment and the normal printing plane.

3. In a typewriting machine, in combination, a plurality of type bars having a limited path of travel. a iiXed abutment, a carriage adjacent said abutment. a frame mounted on said carriage a paper roller car'- ried by said frame and movable relatively to said frame and said abutment toward and from a normal printing plane. and means for. indicating the distance between said paper roller and normal printing plane.

4. In a typewritin; machine, incombination. a plurality of type bars il'tl\'(llll toward a normal printing plane, a fixed abutment, a carriage adjacent said abutment, a paper roller mounted on said carriane, and a flat platen adiacent said roller, said platenand platen roller being n'iovable on said carriage relatively to said abutment and toward and from the normal printing plane.

5. In a typewriting machine, the combination with the type bars each of which has a limited throw in the direction of the platen, of a platen carriage, an abutment which furnishes a rigid backing therefor and prevents the yielding thereof during printing, a platen roll, means on the carriage foradjusting said platen roll toward or from the end of the throw of said type bars, and means for indicating the position thereof withrespect to the normal printing p ane.

6. In a typewriting machine, the combi nation with a plurality of direct-thrust type bars each of which has a limited throw in 'the direction of the platen, of a platen carriage, a member forming a rigid backing for the platen carriage and preventing recession thereof during printing, a platen roll carried by the platen carriage, a platen carried thereby, an adjustable support upon the platen carriage for said roll and platen, and means for moving said support forwardly or rearwardly, whereby the platen and platen-roll may be correspondingly moved with respect to the, normal printing plane.

7. In a typewriting machine, the combination with a plurality of type bars, of a platen carriage, a member forming a rigid backing for the platen carriage and preventing recession thereof during printing, a platen roll carried by the platen carriage, a platen also carried thereby, an adjustable support upon the platen carriage for said roll and said platen, means for moving said support forwardly or rearwardly, whereby the platen di'nd platen-roll may be correspondingly moved with respect to the nor-v mal printing plane, and means for indicating the amount of such movement.

8. In a typewriting machine, in combina tion, a type bar adapted to have a limited throw in the direction of the platen, a platen carriage comprising a frame, a platen roller, a platen roller support adjustably mounted upon the frame, and means upon the frame adapted to move the platen roller support toward and from the end of the path of travel of the type carrier whcreby the posi tion of the platen roller with respect to the normal printing plane may be varied.

9. In a tvpewriting machine, the combination with a plurality of type bars, a platen ca riage, a platen carrier mounted to slide upon the platen carriage, a platen and a platen-loll carried by said carrier, means for sliding said platen carrier forwardly or rearwardly upon the platen carriage, and means for actuating saiddast-mentioned means and for indicating the amount of movement given said platen carrier.

upon the platen carriage,

10. In a typewriting machine, the combination with type bars, of a platen carriage, slides mounted upon the carriage, a platen-- roll journaled in said slides, a platen. hearing against the platen-roll, and means for moving said slides forward and backward whereby the platen is correspomlingly moved with respect to the normal printing plane.

11. In a'typewriting machine, the combi nation with type bars which have predetermined throws in the direction of the platen, of a platen carriage, slides mounted upon the carriage, a platen-roll journaled in said slides, a platen bearing againstthe platen roll, means for moving said slides torward and backward whereby the platen 1h correspondingly moved with respect to the normal printing plane, means for actuating said means, and indicating means cooperating with said actuating means.

12. In a typewriting machine, the combi nation with the type bars each of which has a 'n-edetermined throw in the direction of the platen, of a rigid abutment, a platen carriage interposed between the faces of the types and said abutment, said platen carriage being capable of movement with respect to said abutment for different case printing or letter-spacing, slides mounted a platen-roll journaled in said slides, a platen fixed to said slides and resting against the face of the platen-roll, cam means carried by the carriage and cooperating with said slides to move them forwardly or rearwardly, whereby the platen, is correspondingly moved with respect to thacommonplane assumed by the faces of the types when they are projected to impression, and means mounted upon the carriage for actuating said cam means.

13. In a typewritingmachine, the combination with thetype bars, of an abutment, a carriage resting against said abutment and -movable with respect thereto for letterspacing and different case printing, a platen frame mounted to slide upon the carriage, a platen-roll journaled' therein, a platen fixedto said slide and restingagainst the platen-roll, a rock-shaft. journaled on the carriage, said carriage having cam slots formed in the end walls thereof, arms connected with the platen-roll and having means engaging, said cam-slots, an arm mounted upon each end of said rock-shaft and operatively' connected with one of said first-mentioned arms, a second arm attached to said rock-shaft and adapted to rotate the same, whereby the platen frame, through said cam slots, will be moved with respect to the printing plane, and a scale with which said last-mentioned arm cooperates to indicatethe position of the platen with respect to the normal printing plane.

14. In a, typewriting machine, the comb1- nation with the carriagea platen frame adjustably mounted!hereon. and a paper gage one portion of which is carried by the calrlage and the other by the platen frame.

1.). In a trpmrriting machine, in combination. a carriage, a platen carrier adjustabl mounted thereon, and a paper gage comprising a pair ol' jaws one of which is mounted upon the carriage and the other thereof upon the platen carrier.

10. In a t \'pe\\'rlling machine, in combination, a carriage. a platen carrier mounted thereon and adapted to be adjusted to carry the platen toward or lromthe normal printing plane, a paper page comprising a pair ol clamp jaws one oi: which is mounted upon the carriage and the other thereofupon the platen carrier, and means lorindicating the relative position of said jaws.

17. In a typewriting machine, in combination, a carriage, a platen carrier mounted thereon and adjustable forwardly and rearwardly to carrythe platen toward or from-' the normal printing plane, a paper gage comprising a member carried by the platen frame, a member carried by the platen car rier, said member having opposing facesbetween which the paper is received.

18. In a typewriting machine, in combination, a carriage, a platen carrier adjustably mounted thereon, a paper gage comprising a pair of opposed jaws one of which is mounted upon the thereof upon the platen carrier, and means for. indicating the relative positionof said jaws. I

19. In a typewriting machine, in combination, a carriage, a platen carrieradjustably mounted thereon, a paper gage comprising a pair of opposed jaws one of which is mounted upon the carriageand the other thereof upon the platen carrier, means for moving said jaws relatively to each other,

carriage and the other and means for indicating the amount of such 7 movement.

20. In a typewritmg machine, IXI COmbI- nation, a carriage, a platen carrier adjustthereon, a paper gage c0m-- longitudinally extending recesses upon its rear face.

22..In a typewriting machine, the combination with the platen frame, of a paper roll carried thereby, a platen having its ends' face for receiving the types and.

means for meas es 5 secured to the platen frame and its rear face resting in contact with the paper roll and conforming thereto, said platen being provided with a plurality of recesses upon its rear face leaving a plnralit of raised. portions engaging the paper roll.

23. In a typewritingmachine, in combination, a movable paper carrier, a relatively fixed part, and a paper gage, one portion of which is carried by said paper carrier and 10 the other part by said relatively fixed part. In testimony whereof I aflix my signature,

in the presence of two witnesses.

WILLIAM A. LORENZ.

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