US998946A - Type-writing machine. - Google Patents

Description

W. J. BARRON.

TYPE WRITING MACHINE.

nrmou'mn rmm NOV.14, 1907. nnxnwnn JUNE 16, 1011.

Patented July 25, 1911.

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UNTTED STATES PATENT @FFTQE.

WALTER J. BARRON, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO UNION TYPEWRITER COMPANY, OF ILION, NET/V YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING IVIACHINE.

Patented July 25, 1911.

Original application fil ed July 15, 1901, Serial No. 58,385. Divided and this application filed November 14, 1907, Serial No. 402,141. Renewed June 16, 1911. Serial No. 633,562.

T all whom it may concern:

Be it known that I, VALTER J. BARRON, citizen of the United States, and resident of the borough of Brooklyn, city of New York, in the county of Kings and State of New York, have invented certain new and useful Improvements in Typeriting Machines, of which the following is a specification.

The present invention relates to typewriting machines and more particularly to means for checking or preventing the carriage from rebounding when suddenly arrested in its travel and the invention is especially adapted for use in connection with tabulating mechanism to prevent the carriage from rebounding when it is arrested by the tabulating stops after having been released from control of its escapement mechanism and allowed to run free.

The object of the invention is to provide simple and efficient means of the character specified.

To the above and other ends which will hereinafter appear the invention consists of the features of construction arrangements of parts and combinations of devices to be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a vertical front to rear sectional View of a typewriting machine embodying my invention; the features of the machine unnecessary to an understanding of the present invention being omitted. Fig. 2 is an enlarged detail fragmentary front elevation showing a portion of the machine with the devices on my invention applied thereto. Fig. 3 is an enlarged detail fragmentary side elevation partly in section of some of the parts shown in Fig. 2.

This case is a division of my application Serial No. 68,385, filed July 15th, 1901.

In the present instance the invention is shown applied to a machine resembling the No. 6 Remington machine equipped with a tabulating mechanism similar to that known as the Gorin tabulator, though it should be understood that the invention may be employed in other styles of typewriting machines, whether of the cylindrical or flat platen variety and that various changes may be made in adapting the invention to differcnt styles of machines.

As shown, the frame of the machine comprises a base 1, corner posts 2 and a top plate 3. Standards 4 and 5 project from the top plate and support guide rods 6 and 7 respectively for guiding a carriage truck 8 in its movement from side to side of the machine. The carriage truck carries rollers 9 which cooperate with the guide rod 7 in the usual manner. A cylindrical platen 10 is mounted on a platen shaft 11 which is journaled in bearings in a platen frame 12. The platen frame is pivotally connected to the truck and carries at the front side thereof a roller 13 which bears upon a shift rail 14, shifted in the usual manner to effect a change in the case position of the platen. A feed rack 15 is carried by arms 16 pivoted at 17 to the carriage truck. The feed rack cooperates with a feed pinion 18 secured to the forward end of a shaft which turns in a bearing 19 secured to the top plate of the machine and operatively connected by the usual pawl and ratchet mechanism to an escapement wheel 20. Feed dogs 21 cooperate with the escapement wheel to afford a step-by-step feed movement of the car riage in the usual manner, the feed dogs be ing carried by a dog rocker 22 actuated through a universal bar by the printing key levers (not shown), the universal bar being connected with the dog rocker by links 23. The carriage supports a column stop bar 24 by means of rearwardly extending bracket arms 25. Adjustable column stops 26 are mounted on the column stop bar 2% for cooperation with denominational stops 27 each formed as a forwardly projecting end of an upright lever 28. These levers are pivoted at 29 in a tabulator frame 30 which is secured to the frame of the typewriting ma chine by a yoke 31 and screws 32. The lower end of each of the levers 28'is pivotally connected to a push rod 33 which extends beneath the machine and projects through an opening in a detachable frame 34 secured to the base of the machine. Each push rod is provided with a push key 35 thereto.

30. One of the upright arms is provided with a forwardly extending; arm 42 carrying a screw contact d3 which passes through a threaded opening in the arm and bears at its lower end against the rear end of a release lever 44 pivoted at 45 to a bracket 46 secured to the top plate of the machine. The forward end of the release lever l4: is formed so as to provide a shoe e7 situated beneath the feed rack and normally out of contact therewith, the weight of the torward end of the release lever being suiticient to move it to the normal position shown in Fig. 1.

It will be understood that by pushing any of the denon'iii'iational keys 35 the associated lever 28 may be rocked on its pivot, thereby projecting the end thereof which constitutes a denominational stop 27 into the path of the column stops 26. This same movement is effective to move the arms ilO through the contact of the actuated lever 28 with the universal bar 39. The rocking oil. the arms 4-0 etlects a downward movement of the arm 42, thus rocking the release lever 44 on its pivot and thereby elevating the feed rack 15. The etl'ect of these movements of the parts is to disengage the feed rack from its feed pinion 18, thereby releasing the carriage from its escapement mechanism and allowing it to run free and to be propelled toward the left by the spring drum 4-8 which is connected to the carriage through a strap or band 48. hen one of the column stops 26 strikes the projected denominational stop 27 the carriage will be arrested. The construction thus far described is essentially the same as that employed in the No. (3 Remington machine equipped withv the Gorin tabulator.

Upon reference more particularly to Figs. 2 and it will be seen that the feed rack 15 is also formed as a rack or ratchet bar. Thus it is provided with ratchet teeth i on the upper edge thereof, adjacent ratchet teeth being situated a letter space distance apart in. accordance with the spacing oi the teeth on the feed rack which engages the feed pinion. A pawl 50 is adapted to coact with the ratchet teeth. 45:9 when the feed rack is elevated in the manner hereinbet'ore described to disconnect the carriage "from its escapement mechanism and as indicated in dotted lines in Fig. 2. The pawl 50 is pivoted at 51 to a bracket arm 52 which extenns up in front of the feed pinion and feed rack and is secured at its lower rearwardly extending; end to the bearing 19. This bracket may be formed as a part of the bearing 19 or may be detachably secured In the present instance I have shown one end of the bracket as provided. with a sleeve 53 which surrounds the hearing 19 and is held fixed thereon by a. set screw 54. A stop pin 55 projects from the rear face o1 the bracket 52 beneath the pawl 50 so that the pawl normally rests against the stop pin and is limited in its downward movement thereby. A. leaf spring 56 is secured at one end to a pin 57 projecting from the rear of the bracket. The spring hears at its tree end against the pawl to force it down into contact with the stop Each ratchet tooth t) of: the anti-rebound rack in the present instance has its straight or abrupt face on the right-hand side thereof and the sloping or inclined face to the letthand side and the pawl is inclined downwardly trom right to left so as to engage the abrupt taces oi? the ratchet teeth and prevent a. movement of the teed rack, and the carriage which carries it, 'troin left to ri ht or in the direction of the arrow in it will be understood from the foregoing d es .iption that an elevation of the teed rack 15. ct? vted by an actuation ot the tabulating' mechanisin will bring the ratchet teeth 49 into cooperation with the pawl 50. When the carriage is moving in the direction ol its feed, so as to bring one of the column stops into contact with the projected denominational stop, the pawl will slide treely over the inclined faces of the ratchet teeth, and when the tabulating; stops are brought into engagement the rebound of the Carri: :0 will be positively resisted, checked or prevented by the engagement of the pawl with. the abrupt face. or" one of. the ratchet teeth. The pawl is in position to c'tlect this engaggcn'ient with a tooth 4-9 at each letterspace position of the carriage, so that it is at once eliective to prevent l'OlIXHllitl no matter at what letterspacc position in its travel the carriage is arrested.

From the toregoing description it will be understood that, l have provided simple and ellicient means for preventing the rebound of the carriage and a consequent displacement thcreof when it is suddenly arrested in its travel, and that the pawl and ratchet; mechanism positively prevents a backward movement or rebound ot the carllfiQQ from the letter space position where it is desired to a rest it.

While the pawl 50 has been shown carried hy a lined portion of the machine and the ratchet or rack bar carried by the carriaee, and this arrangement is preferred in the particular form of machine shown and described, it should be understood that these parts may be otherwise arranged and that various other changes may be made without departing from the spirit of the invention.

The claims in the present ca se are directed to a modifiedtorm of construction not specifically claimed. in my application hereinbefore referred to, and no claim herein is to be construed covering any of the several forms of my invention disclosed in said patent application, excepting the rack and pawl construction shown in Fig. 4c in said application and made the subject matter of this divisional application.

\Vhile I have shown a carriage of that style of machine which carries a platen, it should be understood that the term carriage employed in the accompanying claims is intended to include all carriages of typcwriting machines whether or not a platen is carried by such carriage, and that my invention contemplates broadly the use of pawl and rack mechanism for preventing or checking the rebound of the carriage.

li hen I refer in the accompanying claims to carriage anti-rebound devices that are thrown by the direct action of the key into cooperation to check a backward movement or rebound of the carriage I mean to distin guish from those anti-rebound devices which are brought into cooperation by the travel of the carriage as in the construction specifically claimed in my application hereinbefore referred to.

lVhat I claim as new and desire to secure by Letters Patent. is

1. In a typewrit-ing machine, the combination of a carriage, and pawl and rack mechanism for checking the rebound of the carriage, one member of the pawl and rack mechanism traveling in unison with the carriage and the other member being maintained fixed against such traveling movement, and the pawl co-acting directly with different teeth of said rack during the relative traveling movement between the rack and pawl to prevent rebound of the carriage at any letter space position where it may be arrested.

2. In a. typewriting machine, the combination of a carriage, a pawl and a rack normally out of cooperation, and means for bringing said pawl and rack into coopera tion when the carriage is released.

3. In a typewriting machine, the combination of a carriage, tabulating mechanism, and pawl and rack mechanism operative to prevent rebound of the carriage when the tabulating mechanism is actuated, one member of the pawl and rack mechanism travel ing in unison with the carriage and the other member being maintained fixed against such traveling movement. and said pawl co-acting directly with different teeth of said rack during the relative traveling movement between the rack and pawl to prevent rebound of the carriage at any letter space position where it may be arrested.

4. In a. typewriting machine, the combination of a carriage, and a rack and pawl, one carried by the carriage and the other by a fixed part of the machine, a relative move ment f the rack and pawl toward and away from each other bringing about an engagement and disengagement between the rack and pawl.

5. In a typewriting machine, the combination of a carriage, a feed rack therefor, an anti-rebound rack carried thereby, and a pawl cooperative with said anti-rebound rack, said pawl being fixed against traveling movement with the carriage.

G. in a typewriting machine, the combination of a carriage, a feed rack therefor, an antirebound rack carried thereby, and a pawl cooperative with said anti-rebound rack and normally out of cooperation therewith, the disengagement of the feed rack bringing about a cooperation between the anti-rebound rack and its pawl.

7. In a typewriting machine, the combination of a carriage, and pawl and rack mechanism for checking the rebound of the carriage, the spacing of the rack of said mechanism corresponding to the letter-space positions of the carriage, one member of the pawl and rack mechanism traveling in unison with the carriage and the other member being maintained fixed against such traveling movement and said members co-acting directly with each other to prevent rebound of the carriage.

S. in a typewriting machine, the combination of a carriage, and pawl and rack mechanism for checking the rebound of the car riage, the rack of said mechanism being in the nature of a ratchet with the straight or abrupt face of each tooth at the right hand sine thereof and the inclined or sloping face at the left-hand side thereof, one member of the pawl and rack mechanism traveling in unison with the carriage and the other member being maintained fixed against such traveling movement and said members coacting directly with eachother to prevent rebound of the carriage.

9. In typewriting machines, the combination with the carriage, of means for arresting the run of the carriage comprising cooperating stop members, one of which is movable into and out of line with the other, and pawl and rack mechanism for checking the rebound of said carriage when said stop members are brought into engagement.

10. In a .typewriting machine, the combiation with the carriage, of means for ar resting the run of the carriage comprising cooperating stop members, and means for preventing the rebound of the carriage when said stop members are brought into engagement comprising a rack and a cooperating pawl,'said rack having teeth corresponding to the different letter space positions of the carriage.

11. In a typewriting machine, the combination with a carriage, of tabulating mechanism for arresting the run of the carriage, said tabulating mechanism comprising a series of column stops, and a cooperating &

stop; and a pawl and rack shittable relatively by an actuation of said tabulating mechanism into cooperative relation to prevent rebound of the carriage.

12. In a typewriting machine, the combination of a carriage, tabulating stops, one movable into the path of the other, a key for ellecting such relative movement of the stops, and carriage anti-rebound devices that are thrown by the direct action of said key into cooperation to check a backward movement or rebound ot' the carriage.

13. In a ty iewriting machine, the combi nation or a carriage, tabulating stops, one movable into the path of the other, a key for effecting such relative movement of the stops, and carriage anti-rebound devices that are thrown by the direct action of said key into cooperation to check a backward move ment or rebound of the carriage, said carriage anti-rebound devices comprising a pawl and a rack.

14. In a typewriting machine, the combination with a carriage; of means for arresting the run of the carriage comprising stop members, one of which is shiftable into and out of line with the other; and means for preventing rebound of said carriage when said step members are brought into engagement comprising a rack and springheld pawl mounted for relative movement one into engagement with the other; and a tabulating key for effecting relative shift ing movements between said stop members and between the rack and pawl.

15. In a typewriting machine, the combination with a carriage, of a series of column stops n'iounted thereon, a cooperating stop movable into and outot line with the column stops, a rack on the carriage, and a springheld pawl, said rack and pawl being 1nounted for relative movement into and out of cooperation to prevent rebound ot' the carriage when one oi? said column stops enp'ages the eooperating stop.

16. In a typewriting machine, the combination with the carriage; of means for ar resting the run of the carriage comprising cooperating top members, one of which is shitltable into and out of. line with the other of said members; and means for preventing the rebound of the carriage when said stop members are brought into engagement comprising a ack having; a series of teeth cor responding with the different letter space positions ct tie carriage and a pawl for engaging said rack. one of said pawl and rack members being shit'table into and out of engagement with the other; and a tabulating key for operating said shittable stop member and for bringing said pawl and rack members into engagement.

17. In a typei riting machine, the combination with the carriage; of mechanism for arresting the run of the carriage comprising cooperating stop members, one of said stop members being shittable into and out of line with the other; and means for preventing rebound ot' the carriage comprising two cooperating parts separate from said stop members, one of which parts is shittable into and out of engagement with the other, said shiftable part being operatively connected to said shittable stop member and moved into engagement with the other of said parts when said shiitable stop member is moved into line with the other stop members.

18. In a typewriting machine, the combination with the carriage; of means for arresting the run of the carriage comprising cooperating stops. one of which is shittable into and out of line with the other, a tabulating key for operating said shittable stop; and in 121118 for preventing rebound of the carriage when said stops are brought into engagementcomprising a rack and a cooperating pawl. for engaging the teeth of said rack, said pawl and rack members being normally disengaged, and one of said members being operatively connected to said tabulating key and arranged to be shifted thereby into engagement with the other of said members.

19. In a typcwriting machine, the combi nation of a carriage; means for preventing rebound of the carriage, said means comprising a pawl and a rack mounted for relative movement; and a key for effecting such relative movement between the rack and pawl.

20. In a 'typcwritine; machine, the combination of a carriage; and means for preventing rebound of the carriage, said means comprising a part that moves with the can riage and a part that is carried by the frame of the machine, one of said parts riding over the other throughout the movement of the carriage in the direction of its feed and said parts cooperating to positively prevent a movement of the carriage in the opposite direction.

21. In a typcwriting machine, the combination of a carriage; and means for preventinc; rebound of the carriage, said means com-- prising a pawl. and a 'ack the pawl riding over the teeth of the rack during the travel of the carriage in the direction of its feed and positively engaging the rack in the 0pposite direction, 7

22. In a typewriting machine, the combination of a carriage; and means for pre venting rebound ot' the carriage. said means comprising a pawl and a rack, the pawl, riding over the teeth of the rack during the travel of the carriage in. the direction of its teed and positively engaging the rack in the opposite direction; and means operable at will tor throwing said pawl and rack into and out of operation.

23. In a typewriting machine, the combination of a carriage; and means for checkingthe rebound of the carriage, said means comprising a pawl and a ratchet operative to move freely one over the other when the carriage moves in the direction of its feed but to interlock and check the movement of the carriage in the opposite direction.

24. In a typewriting machine, the combination of a carriage; and means for check ing the rebound of the carriage, said means comprising a pawl and a ratchet operative to move freely one over the other when the carriage moves in the direction of its feed but to interlock and check the movement of the carriage in the opposite direction; and hand actuated means operable at will for throw- 111g said pawl and ratchet into and out of cooperation.

Signed at the borough or" Manhattan, city of New York, in the county of New York and State of New York, this 12th day of November A. D. 1907.

VALTER J. BARRON.

l Vitnesses CHARLES E. SMITH, J. B. Dawns.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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