US990834A - Type-writing machine. - Google Patents

Description

L. D. BROUGHTON. TYPE WRITING MACHINE. APPLICATION TILED PERM, 1910.

Patented m 2-, 1911.

2 SHEETS-SHBET 1.

Fig. I.

L, D. BROUGELTON. TYPE WRITING MAGHINB.

APPLICATION FILED T11R21, 1910.

Patented May 2, 1911.

2 SHBETSSHEET 2.

UNITED s'ra Es PATENT orn ce.

'LYMAN DA'VTD BROUGHTON, F HARTFORD, CONNECTICUT, ASSIGNOR T0 UNDERWOOIO TYPEWRITEE COMPI LNY, OF NEW YORK, N. Y.,. A CORPORATION OF NEW JERSEY.

TYPE-WRITING MACHINE.

' liartford, in-the county of Hartford and State. of Connecticut, have invented certain new and useful Improvements in Type- Nriting Machines, of which the following is a specification.

This invention relates to typewriting machines and especially to combined margin regulating and signal-operating mechanism therefor.

In the usual type of Underwood front strike machine, the margin gage controlling the width of the left hand margin on a sheet is slidably mounted on a rod, and the gage controlling the width of the right hand margin is mounted upon both the rod and a rail. Bot-h gages are provided with dogs engaging racks. One of said racks is provided with rock-arms, one of them lying about midway of the range of movement of the carriage, thereby preventing the use of both gages at either extreme of movement of the carriage.

The object of this invention isto improve and simplify the margin-regulating and signal-operating mechanism to mnder it more compact and rigid, and at the same time, to provide a strong and efficient structure readily applicable to existing machines, the

gages being slidable to either limit of movement of the carriage.

In this invention, said left hand margin gage is adjustably mounted on and guided by a crossbar rigidly connected to the front standards. A ra k on the cross bar is engaged by a dog on the gage. A tappet' is associated with the gage to be shifted back and forth therewith, the tappet being splined on a bell-ringing and key-locking rockshaft, which is rotatable relatively to the gage, through which it loosely passes. The carriage carries a cam to rock the bail or arm, whereby to turn the rock-shaft to operate the'bell-ringing and key-locking de-'- A right-hand margin gage is ad vices. justable on the cross bar.

. Other objects and advantages will hereinafter appear.

In the accompanying drawings, Figure 1 is a" perspective view of amachine of the Underwood type equipped with my inven-' tion, parts being broken awayto better disclose the construction. Fig. 2 is a detail rear perspective v1ew of the left-hand margin Specification of Lctters Patent.

Patented May 2, 1911.

Application filed February 21, 1910. Serial No. 544,968.

' gage and the tappet. Fig. 3 is a detail perspective View of the tappet, showing the compound cam to engage the tap-pet. Fig. 4 is a plan View, partly broken away to more clearly disclose the margin gages. Fig. 5 is a side view, partly in section, showing the left-hand margin gage in normal position. Fig. 6 is a detail sectional view of said gage and its supporting cross-bar, showing the dog 14 in released position. Fig. 7 is a side view, partly in section, showing the positions of the parts when the arm on the rocking rod is engaged by the cam on the carriage. Fig. 8 is-a detail sectional View of the right-hand gage, with its dog in released position. Fig. 9 is a rear perspective view of the cross-bar and gages.

The usual carriage 1 of said Underwood writing machine is mounted on a frame 2. The front side of the carriage is sup JOItQCl by a wheel 3, to run upon a track 4, ormed or provided upon a rigid cross-bar 5, supported on standards 6 at the front of the machine. Upon the carriage is fixed a cam 7, having a bell-ringing cam face 7 a and independent line-locking Cams 7 and 7 to engage a tappet- 13, preferably in the form of a roller, on a bail or arm 8 splined on a rock-shaft 9, extending across the machine, and journaled in brackets 10, depending from the cross-bar 5. The r0ck-shaft is, preferably, semi-cylindrical in cross-section, to fit openings 14 in the arm orb-ail. The cam 7 on the carriage presses down the arm for bail 8, to rock forwardly the depending which engages a cam 18, formed on a hammer 19 which rings a bell 20. Said trip also carries a pin 21 to engage an arm 22 provided on a rock-shaft 23, which carries a locking-bar 24: normally ineffective, but swung forwardly by the lever 16 through the engagement of either line-locking cam 7 b or 7 to lock the keys 25, after the bell 20 had'been sounded. Any suitable springs, as 26, may be employed for returning the parts. The tappet 13 is associated with a carrier 11', between the :arms of the bail 8, and having a handle 12. The rock-shaft turns loosely in a cylindrical perforation 15 through the carrier'or margin gage 1.

'Upon the cross bar 5, I form a rack 28 having teeth 27,]about equal to the length of run of'the carriage 1. This rack 28 is united shaft,

, engaged from the rack,

rock-shaft 9, to engage the teeth 27 of the rack. By journaling the dog on the rock a special pivot is avoided and the dog swings vertically, so that if accidentally disthe margin gage is not liable to-be displaced,because to shiftthe gage requires the exercise of pressure in cam-faces added a direction at right angles to the pressure required to release the dog. The dog has a finger piece 33, whereby the margin gage may be adjusted along the rack. Aspring 34 holds the dog in engagement with the rack teeth. It will be noticed that the swinging arms or supports of the rack usually employed inv said Underwood machine as aforesaid. are dispensed with, and hence the travel of the gageisnotlimited thereby. The toothed rail 28 serves both as a support and "uide for the margin gage.

Formerly, the left-hand margin gage turned together with its rack when engaged by the carriage tappet to operate the bellringing and line-locking devices. The

weight of the parts necessitated the use of a strong spring to return them to normalpo sition, and owing to the friction thus caused, between the tappet and the cam, the carriage was sometimes liable to halt or stick when its tappet engagedthe cam, 'if' the working parts were clogged with dust. By mounting the compound-cam.7 on the carriage, instead of on the margin-gage, a lighter and more sensitive bell-ringing and line-locking mech anism is produced, which result is further aided by providing a rigid instead of a rocking rack 27 so that the rock-shaft 9 merely supports the weight of the tappet 13, which is returned to normal position by a comparatively weak spring 26, easily overcome by the weight of the carriage 1.

Formerly, the carriage tappet had two projections successively engaging the bellringing and line-locking cams on the margin-gage. 1 In the present invention, a single tappet 13, is connected to the bell-ringing and line-locking rock shaft 9, and additional to the carriage-supported cam 7, so. that the compound cam alone need be adjusted. The roller 13, constituting the tappet, reduces the friction created by the engagement of the camfaces 7, 7*, 7 therewith to a minimum.

Referring now to the devices for arresting the carriage when returning to begin a new line, 35 is a stop mounted upon the carriage 1, to coiiperate with the stop 36, which is carried by a margin-gage alongf'fthe rail 28 to regulate the stroke of the carriage. The margin-gage 37 is supgage from rocking.

' splined on and 37, adjustable ported and guided entirely by the rail 28, instead of on fixed and rocking rods, as heretofore, the shapeof the rail and slide bearing '38 of the gage 87 preventing the There is nothing to obstruct the adjustment of. this gage from side to side of the machine, the same rack 27 serving for both gages, which are both ltd justable to either extreme of movement of the carriage. A dog 39 journaled on the rocking-shaft 9, has afinger piece 40, and a returning spring 41.

f Variations may be resorted to within the scope of the invention, and portions of the improvements may be used tithout others.

' Having thus described my invention, I claim:

1. In a typewriting machine, the combi nation with a frame, a carriage, and a signal mechanism, of a rock shaft extending from side to side of the machine and supported by the cross bar of the frame and connected with the signal mechanism, and a tappet adjustable throughout. substantially the entirelength of the shaft, and engaged by the carriage to turn the tappet and rock shaft to operatethc signal mechanism.

2. In a typewriting machine, the combinationwith a carriage, and signal mechanism, of a cross bar on the frame of the machine, a

rock-shaft connected to the signal mocha-I nism, and having an arm splined thereto, to be engaged b the carriage to rock the arm and rock' sha t and operate the signal mechanism, and a gage shiftable on the cross bar, and with which the arm is connected.

3. In a typewriting machine, the combination with a carriage and a signal mecha nism, of a cross bar on the frame of the machine, a gage supported by and'adjustable upon the cross bar from side to side of the machine, to arrest the carriage at different points in its range of movement, a rockshaft extending across the inac hinaand con nected with t e signal mechanism, and a tappet connected to move with the gage and splined on the in the path of movement of the carriage to bief rocked thereby relatively to the gage and e ect rock shaft, the thppet. lying the operation of the signal mechanism. I

tion with a carriage and signal or line-end mechanism, of a cross bar extending from side to side of the frame of the machine, a rack forming a part of the cross bar and substantially co-extensive therewith, a slide carried by and adjustable along'the cross bar and rack, a dog on the slide cooperating with the rack to lock the slide in adjusted position, a rock shaft turning relatively to the slide and connected with the signal mechanism, a tappet splined on the rock shaft and connected to move with the slide, and a part on the carriage to swing the tappet and rock the-sha ft to effect the operation of the signal mechanism.

5. In a typewriting machine, the combination with a carriage, and signal and key locking mechanism, of a cross bar extending from side-to side of the machine and forming a rail, a rack mounted upon the cross bar,.a margin gage having a channeled slide to clasp the rail and shiftable from side to side of the machine, a dog on the gage meshing with the rack, a rock shaft on which the dog is journaled, the rock-shaft connected with the signal and key locking mechanism, a tappet splined on the rock shaft and connected to move with the gage, and a cam on the carriage to engage the tappet and rock the shaft relatively to the slide to operate the signal and key locking mechanism.

3. In a typewriting machine, the combi nation with a carriage and a signal mecha-.

nism, of a frame including a toothed rail extending across the machine, right and left margin gages supported on and adjustable along the rail from side to si de of the ma chine, and having dogs'to engage the teeth of the rail, and also having bearings, a rock shaft passing loosely through -the hearings in the gages, and connected with the signal mechanism, and a tappet splined on the rock shaft and shiftable with one of the gages, to be engaged by the carriage to operate the signal mechanism 4. In a typewr tiug machine, the combination with a carriage, of across bar having a track for the'carriage, and extending from side to side of the machine, a toothed rail formed. on said bar, a margin gage supported on and adjustable along the rail to regulate the width of one of the margins, a dog coii fierating with the teeth of the rail to lock the margin gage Where adjusted, a rock shaft, and a tappet member splined on said rock shaft.

8. In a typewriting machine, the combination with a carriage, of a cross bar having a toothed rail extending from side to side of the machine, a margin gage having a channeled slide clasping the rail to support the gage and hold it in position, the gage being adjustable along the rail, a shaft, and

'a dog journaled on the shaft and cotiperating with the teeth of the rail to lock the margin gage where adjusted.

9. In a typewriting machine, the com-- bination with a carriage and signal and key locking mechanism, of a gagesupport extending from side to side of. the machine, a margin gage carried by and adjustable along the support, a rock-shaft connected with the signal and key locking mechanism, a bail splined on the rock shaft and embracing the gage to be shifted therewith, and a tappet on the bail engaged by the earriage to operate the signal and key-locking mechanism.

10. In a typewriting machine, the com.- bination with a carriage and signal and key locking mechanism, of a gage-support extending from side to side of the machine, a

margin gage carried by and adjustable along the support, a tappet to operate the signal and key locking mechanism, and connected to shift. with the gage, and a compound cam on the carriage to engage, and rock the tappet relative to the gage to operate the signal and keylocking mechanism.

11. In a typewriting machine, the combination with a carriage, and signal and key locking mechanism, of a rock shaft con-- nectcd with the "signal and key locking mechanism, a tappct splined to and adjustable along the rock-shaft across the machine, to be engaged by the carriage to rock the shaft and operate the signal and key locking mechanism, a rail extending across the machine, and gages mounted upon and adjustable along the rail, one of which regulates the position of the tappet.

1.2. In a-typewriting machine, the com bination with a carriage and signal and key'locking mechanism, of a cross bar having a stationary rail thereon, a left hand gage supported upon and adjustable along the rail from side to side of the machine, locking means to hold the gage whercach justed, a rock shaft extending beside the rail from side to. side of the machine, and co11-- nected to the signal and locking mechanism, an arm turning with the rock shaft and engaged by the carriage to operate the signal and key locking mechanism, the arm shiftable with, the, gage relative to which it turns, and a right hand gage supported upon and adjustable along the rail from side to side of the machine to arrest the carriage at the beginning of a line.

13. In a typewriting machine, the com-' bination with a frame and a carriage, of a cross bar, a rack on the cross bar, a sliding on the rack, a tappet sliding with and rocking relative to the gage, a bell ringing and line locking rock shaft to which the appet is splined, and a compound cam on the carriage to engage the tappet.

1 1-. In a typewrlting machine, the conr bination with a carriage, of a fixed bar or rail which extends across the front of the machine and upon which the front portion of the carriage runs, a rack bar formed or provided upon said rail, a signaling mechanism including a rock-shaft extending along said rail, a carrier titted to said rack bar, a

tappet member splined to said rock shaft to be engaged by a cam on the carriage, and adog upon said carrier to engage said rack.

15. In a typewriting machine, the combination with a carriage, of a fixed bar or railwhich extends across the front of the machine and upon which the front portion of the carriage runs, a rack bar formed or provided upon said rail; a signaling mechanism including a rock-shaft extending along said rail, a carrier fitted to said rack bar, a tappet member splined to said rock-shaft to be engaged by a cam on the carriage, and a dog upon said carrier to engage said rack, said dog movable in a vertical direction to engage and disengage said rack.

16. In a typewrlting machine, the combination with a carriage, of a fixed bar or rail which extends across the front of the machine and upon which the front portion of the carriage runs, a rack bar formed or provided upon said rail, a signaling mechanism including a rock shaft extending along said rail, a carrier fitted to said rack bar, a tappetmember splined to said rock shaft to be engaged by a cam on the carriage, and a dogupon said carrier to engage said rack, said dog having a'handle movable in a direction crosswise to said rack bar..

17. In a typewriting machine, the com-' hination with a carriage, of a fixed bar or rail which extends across the front of the machine and upon which ,the front portion of the carriage runs, a rack bar formed or provided u on said rail, a signaling'mechanism inclu ing a rock shaft extending along said rail, a carrier fitted to said rack bar, a tappet member splined to said rock shaft to be engaged by a cam on the carriage, a dog upon said carrier to engage said rack, said dog having a handle-movable ina direction crosswise to said rack bar, and a finger piece on said carrier in proximity to said handle.

18. In a typewriting machine, the combination with a carriage, of a fixed bar or rail which extends across the front of the machine and upon which the front portion of the carriage runs, a rack bar formed or provided upon said rail, a signaling mechanism including a rock-shaft extending along said rail, a carrier fitted to said rack bar, and also supported upon said rock shaft, a tappet member splined to said rock shaft to be engaged by a cam on the carriage, and

a dog upon said carrier to engage said rack.

LYMAN DAVID BROUGHTON.

Witnesses:

W. M. BYORKMAN, FRANK A. Coon.

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

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