US1156588A - Type-writing machine. - Google Patents

Description

D. A. CARPENTER.

TYPE WRITING MACHINE.

APPucATrQN min AuG.2e.19'1o.

Patented Oct. 12, -1915.

3 SHEETS-SHEET! 'Im/ENTER QD Li HVIEATTERNEY D. A. CARPENTER.`

TYPE WRIIING MACHINE.

APPLlcATlon man Aue.26. 1910.

.Patented Oat. 12, V1915.

3 SHEETS-SHEET 2.

HIEATTURN'JEY p. A. CARPENTER.

TYPE WRITING MACHINE. APPLICATION PILE'IJ Aue.2r6. IsIo.

1,156,588. `Fammi oet, 12, i915.`

l 3 SHEETS-SHEET 3.

TS PATENT DANIEL A. CARPENTER, 0F NEW YURK, N. Y., ASSGNOR, BY MESNE ASSIGNMENTS, TO REMINGTON TYPEWRITER COMPANY, OF ILION, NEW YORK, A CRPORATION' OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent'.

Patented Oct. 12, 1915.

Application filed August 26, 1%10. Serial No. 579,078.

To all whom it may concern.'

Be it known that l, Dimmi, A. (lAiirnN'inii, vcitizen of the United States, and resident of the borough of l\'lanhattan, city of New York, in the county of New York and State of New York,l ha ve. invented certain ne and useful liiiprovenieiits in '.lype-.lVriting Machines, of which the following is a specification.

This invention relates particularly toiniproveinents in carriage arresting' means which constitutes part of the tabiilating` mechanism of typewritiney iifiaehines, and includes shoek-absoibing means, the oi'lice 'of which is to absorb the shock and safely distribute the stress7 to which a n'iachine is sillijected when the carriage is arrestedafter it has run a .longklistanee .'lhc object of the invention is to improve the shock-absorbiiig means.

The invention consists of the mechanism which is hereinafter described and specified in the claims.

On the accompanying sheets of drawings,

on which like reference iiuiiiei'als designate like parts of different views, Figure 1 is ay side and sectional elevation of parts of a Monarch typewritiiig.: machine embodying features ofVA the invention; Fig. 2, a rear elevation of a-poi'tion of this machine; Fig'. 2l, a side and sectional elevation` on aii enlarged scale, of parts of the tahulatiiief mechanism; Fig. 4, a plan of a fragment of the, machine#` and Fig. 5, a broken plan and horizontal section of mechanism which includes a stop-bar and sliock-absorbiiig springs.

rlhe following` description of the invention. it is believed, would enable a mechanic,

skilled in the construction of typewrit-ing` machines, readily to apply the invention tov any of the well known type-ba r machines, as well as to the Monarch whether the stop-bar of the tabulatiiig' mechanism is on the car vrThe platen-frame is connected by balls The frame ot' the machine is composed of the base l, posts 2 and top-plate 3. The dogrocker 4 is pivotally mounted in the hanger 5, attached to the top-plate, and is connected with the universal bar by the link 6, and normally kept in the position in which it is shown iii Fig. 1 by the spring 7. The escapenient-wheel S is mounted on the. shaft 9 which passes through the standard 10, aftixed to the topplate, and on this shaft, at its front end, is the piston 11. The platen-frame, in which the platen 1Q is mounted, is coniposed of the groov- ed rails 13 and 14 and endplates 15, these rails and end-plates beinzgr a single castingl and the rails being united by a web 1G as well as by the, end-plates. The feed-rack 1T is provided with arins 18 which extend between the rails 13 and 14 and are pivoted to the end plates 15 by pivots 19, and

. between each arm 1S and the rail 13 is a coil springl 2() which bears dowin Yard on the arm. 21 and 22 willi the grooved rails 23 and 24 which are atlixed to the standards 25 and 26 that rest on and are attached to the top-plate 3. The tabulator-key, 2T, is atlixed to the rod 2S, which is pivotally connected to the angular lever 29, this lever being mounted on the screw 30 by which the lever is attached to the lug 31 projecting from the rear post Q at the right side of the frame. rlhe link :$2 connects this lever with the lever 33. which is pivoted by a screw 34 to a lug 35 formed on the under side of the topplatc, the lever 33 having on it a stop 3G. The iaclelifter 37 is pivoted to and supported by the lever 32%, the branches 38 extending on opposite sides of the bearing of the shaft 9 and being provided with shoes BS) which normally lie under and closeto but not in contact with the rack 17. The push-bar 40, extendingV iipward fromA the i'aclelifter and behind the rail 23, is riveted to the branches &8 of the.

' rack-lifter, this push-bar comprising' a yoke ,ment with the pinion 11, the arms 1S of the rack turning' on the pivots 1S), so that then the carriage is released from the control of the. escapement-mechanism, vand will be drawn to the left by the carriage-motor un- .this machine, comprises a ttop-bar supportf ed by arms Which Vare afxed to the carriage and in which the stop-bar is loosely mount-V4 ed, a set of stops adjustably attached to the stop-bar, a combined stop and latch operav tive 4to engage a stop of said set and thereby to lock the stop-bar to the frame of the ma chine, when the carriage reaches a predetermined position in a tabulating operation, and a spring mounted on the stopbar and forming a cushion, on wlhich the carriage acts at the moment when the stop-bar is locked tothe frame, and which commonly will allow the carriage to pass that position, the spring being eEective to 'return the carriage to. that position. The stop-bar 42,

villustrated in Figsjl et seg. to 4 inclusive, extends through and fits loosely .in the supporting arms 43 and 44 Which'are aiiixed to the back of the carriage, and on the bar at its ends are nuts 45 and -46. The collar 47 and volute spring 48 loosely surround the bar :between thev arm 44 and the nut 46.. This4 spring presses in opposite directionson the collar,- and nut 46, keeping the collar in contact with the arm 44, and the spring normally keeps the nut 45 in Contact with the arm 43 (Fig. 4). The force exerted by this spring against the arm 44 is greater than that exerted by the carriage-motor on the carriage.l This stop-bar isprevented from turning by means of the screw 49 set in the arm 44 and extending into the slot 50 in the bar. The stop 51 attached to the bar 42 (Figs. 1 and 2) is the same as the columnstops which the Monarch machine has long contained, and this and other similar stops forming a set fit in the slots in the stop-bar and are adjustable on thebar in the usual manner. i

The` combined stop and latch, above mentioned, are mounted in the supporting bracket 52, which is fastened to the rail 23, this bracket having arms 53 and 54 in which the shaft 55 has bearings, and. vbetween f, which the combined stop and latch 56 and 57 fit on the shaft, and by which they are held close together and preve'ited from moving either to the right or left. Thestop 56 is fastened to this shaft by the pin 58, and

the spring 59,.confined'in the cavity 60 in the arm 54 and surrounding the shaft and extending into holes in the stop and arm, normally keeps the arm 61 of 'the stop in contact with the back and top of the bracket 52, so that the stop then is out of the path of the stops 51 on the stop-bar. The arm 61 extends over the push-bar40,A Whose upper end fits loosely in the notch 62 Yformed in theunder side of the arm. The latch 57 is attached loosely to the shaft 55 by the pin` 63 which passes through the slot 64 in the hub of the latch and is fast ini the shaft (Fig. 4). The spring 65, surrounding the hub of the. latch and bearing on the latch and the stop 56, normally keeps the front end of the slot 64, .or that'end which is shown in Fig. 4 above the other, in contact with the pin 63. The projection 66 on the right side of the latch tapers on its under sidej67 up- Ward and backward from left t0 right. This latch, as well as `the stop 56fis normally'held out of the pathof the'stops 51 on the stop-bar. The arrangement of the parts of the carriage-arrestingmeans is such that when the tabulator-key 27 is actuated as above described, the stop" 56 is turned by the action of the push-bar 40 on the arm 61 of the stopA to the position in :which that stop Vis represented in Fig. 3, while the latch 57 turns with the. stop 56v and at the end of their movement is-in such a position thatV a stop 51 passing the latchfrom right to left so acts on the tapered surface 67 a's to force the latch backward against the action of the spring 65, far enough to enable the stop 51 to clear the latch and strike the stop 56.

When a stop 51 thus passes the latch, the' spring 65 forces the latch behind that stopl and then the stop which is attached to the stop-bar, and which cannotpass the stop 56,

in confined between theblatter stop and the ar isilockedto the latch sothat the stop frame of the machine.

To predetermine the positions inwhich the carriage shall come to rest when its move- -ments are controlled by the tabulating mechanism, the stops 51 are\adjusted in the usual manner on the stop-bar. Then, if a tabulating operation is performed, the pre1 determined position to be occupied by the i ward its left end, andthe reaction of. the spring onV the carriage arrests the latter without subjecting the machine to any injurious shock or stress. The spring also returns the carriage immediately afterit is '120 and collar 47 sliding on the stop-bar to-f arrested to said predetermined position, for i the force of this spring is greater than that exerted on the carriage=by the carriage-motor, and any backward movement of the car-' the shoulders 75 and 76.

riage beyond that position is preventedl by the coi-action of the latch 57, the stop 5l, the stop-bar. and the nut 45 on the arm 43. I`hen pressure is removed from the tabulator-key, whereupon the rack 17 rengages with the pinion 11 and the stop 56 and latch 57 return to their normal positions. Sometimes the carriage will be arrested, it' it has traveled only a short distance, as soon as the stop 51 strikes the stop 56, the spring 48 b'eing stiff enough then to prevent the carriage from going farther, but if the 'carriage travels beyond the predetermined position through any number of letter spaces, or any fraction of a letter space, the spring will return the carriage instantly to that position.

Preferably provision should be made for the travel of the carriage through at least two or three letter spaces, as indicated by the drawings.

The volute spring 48 is preferred to a common helical spring which might be substituted for it, because the resistance ofthe volute spring increases, and the force of its re-action diminishes, so fast as to render it apt more gently to arrest and repel the carriage than would the helical spring.

Although the carriage-arresting mechanism above described illustrates featuresof the invention and Itheir operation, yet it does not fully represent it. The arm 43 of a long or heavy carriage would be liable to strike the nut 45 rather hard, for a spring 48, strong enough to arrest the carriage after it had run a long distance, would" force it back, frequently, with considerable violence. lf, however, the stop-bar represented in Fig. l5 is substituted. vfor that shown in the other views, then the mechanism will gently arrest not only the forward but also' the backward movement of a carriage. The stop-bar G8 (Fig. 5) is provided with notches in which tit adjustable stops 51, and

extends loosely through arms G9 and 7 0, and through bushings 71 and 72 screwed into hubs 73 and 74 Vformed on these arms, which correspond to the arms 4B and 44 above described, and are fast on the carriage. This stopbar has two oppositely facing shoulders 7 5 and 7G from which project parts 77 and 780i the bar` the diameter of these parts being less than that of the part between the shoulders,and on the parts 77 and 78 are' nuts 79 and 80, loose collars S1 'and S2, and volute springs 83 and 84, the springs bearing against the collars and nuts, and normally keeping the collars in contact with The bushings 71 and 72 are to be adjusted so that the distance between the planes of their outer ends or faces will equal the distance between the planes of the shoulders and 76, and consequently so that the collars 81 and 82 will normally rest against the bushings as well as the shoulders. The screw 85, extending through a hole in the arm 70 and into the slot SG in the bar (S8, )revents lthe bar from turning but allows it or the carriage to be moved horizontally either to the left or right although the other is held fast. This bar is so made and connected with the arms 69 and 70 that it the bar is moved endwise while the carriage is kept at rest, it will be restored to its normal position either by the spring 83 or the spring 84, and that if the bar is held still and the carriage is forced to the right or left, one of' these springs will return the carriage to the position from which it was moved.

Now, it will be understood, when a tabulating operation is performed, the tabulating mechanism of the machine comprising the stop bar (38 and all ot' the other mechanism shown, except the stop bar 42, that the stop forced back by the spring 84 until the bushing 71 strikes the collar Sl'and the collar 82 strikes the shoulder 76. If the bushing 71 strikes the collar S1 hard the shock will be transmitted to the spring 383, which will gently arrest the backward movement of the carriage, and then, if the carriage shall have passed the predetermined position in which it is desired to have it come to rest, the combined action of the spring 83 and the earriage motor will return the carriage to that position, which it will reach when the bushing 72 and collar 81 again make Contact re spectively with the collar 82 and the shoul der 7 lVhen the carriage drives the bush ing 71 against the collar y81 with less force than that which the spring 83 exerts on the collar, then the backward movement of the carriage will be arrested as soon as the bush# ing strikes the collar, so that in operations wherein the carriage runs only short distances, the action ot' the collar 81, spring 83' and uut 79 is sul'xstantially the same as that of the nut 45 shown in Fig. 4. The force exerted by the spring S4 must be greater than that exerted by the carriage motor, but the spring 83, whose. action is aided by that ot' the motor, may exert either more'vor less force than does themotor. 'lhese'springs are preferably volute springs, their action being better than that ot' helical springs would be for reasons above stated. The stop bar (3S can be adjusted longitudinally'by turning the bushings 71 and 72 so as to move them equally in the same direction.

It is to be understood that-the invention claimedfcouldfbe embodied in mechanism differing in form .and details of construction from that which has been specifically described above.

What I claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine comprising tabuluting mechanism, the combination in operative on the bar when it is thus moved in :either direction to force it back 'to its natural position on its support.

2. In a. typewriting machine comprising tabulating mechanism, the combination in, the tabulating inechanismof a stop-bar movable endwise to change its position on its support, the bar being thus movable in both directions from the position which it naturally occupies on its support, and automatic restoring means tending to prevent such a movement of the bar in either direction and operative on the bar when it is thus moved in either direction to force it back to its natural position on its support, said restoring means including a pair of springs.

3. In a typewritingmachine comprising tabulating mechanism, the combination in the tabulating mechanism of astop-bar movable endwise to change its position on its support, the bar being thus movable in both directions from the position which it naturally occupies on its support, and automatic restoring means tending to prevent such a `movement of the bar in either direction and operative on the bar when it is thus moved A in either direction to force it back to its natural position on its support, said restoring means including a pair of voluto springs.

Il. Ink a typewriting machine, a stop-bar movable endwise on its support in both directions from its normal position thereon, in combination with automatic restoring means and adjusting devices.

5. In a typewriting machine, a stop-bar loosely mounted on its support and having two oppositely-facing shoulders, combined with collars fitting loosely on the bar and normally resting against said shoulders and against surfaces ofl said support, and with cushions bearing against the collars and tending to keep them in contact with said shoulders and surfaces.

6. In a typewriting machine, a stop-bar loosely mounted on its support and having tWo oppositely-facing shoulders, combined with collars fitting loosely on the har and normally resting against said shoulders, ad-

7. In a typewriting machine, a stop-bar loosely mounted' on its support and having I two oppositely-facing shoulders, combined with collars fitting loosely on the bar and normally resting againstsaid shoulders and against surfaces of said support, and with springs mounted on the stop-barand bearing against the collars and tending to keep them in contact with said shoulders and surfaces. y I v 8. In a typewriting machine, a stop-bar loosely-mounted on its support and having two oppositely-facing sh ulders combined with collars fitting loosel` on the bar and normally resting against said shoulders and against surfacesof said support, and with volute springs mounted on the stop-bar and bearing Aagainst the collars and tending to keep them in contact with said shoulders and surfaces.

9.'In a typewriting machine, a stop-b i' 't' loosely'mounted on its support and having? two oppositely-facing shoulders, combined with collars fitting loosely on the barand A normally resting against said shoulders, adjustable devices attached-to said support and having surfaces with which said collars normally make contact, and springs confined between said collars and holding-devices on the bar, the springs tending to keep the collars in contact with said shoulders and ad.- justable devices. A

10. In atypewriting machine, a stop-bar loosely mounted on its supportand having two oppositcly-facing shoulders, combine with collars fitting loosely on the bar and normally resting against said shoulders, ad: `pistable devices attached to said sup ort' and having surfaces with which said col ars normally make contact, and volute springs confined between said collars and holding-devices on the bar, the springs tending to keepA the collars in contact with said shoulders and adjustable devices.

l1. In a typewriting machine, 4a stop-bar.

mounted on the carriage and `movable end: wise on its support in both directions from its normal position thereon, in combination with automatic restoring means, and means for locking the stop-bar to the frame when the carriage reaches a predetermined position in a tabulating operation.

I 12. Ina typewriting machine, a stop-bar mounted on the carriage and movable endwise on its support in'both directions fromV its normal position thereon, in combination with automatic iesoring means and adjusting devices, and means for looking the stop 'bar to he frame when the carriage reaches a, predetermined position in a tabulating op- 5 eration. A

Signed ai; che borough of Manhattanl, city of New Yorka inythe county of' New York,

and State of New Tfork, this 25th day of August, A. D, 1910.

DANEL A. CARPENTER.

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