US1122232A

US1122232A - Type-writing machine.

Info

Publication number: US1122232A
Application number: US69937012A
Authority: US
Inventors: Cornelius B Corcoran
Original assignee: Underwood Typewriter Co
Current assignee: Underwood Typewriter Co
Priority date: 1912-05-24
Filing date: 1912-05-24
Publication date: 1914-12-22
Anticipated expiration: 1931-12-22

Description

G. B. GORGORAN.

TYPE WRITING MAOHINE.

APPLIOATION FILED MAY 24, 1912.

Patented Dec. 22, 1914.

IIII

I e n chines, and more particularly to line-spacing continues ,3. GORGORAN, or NEW-Yuan, iii. Y.. Assi'enon' T UNDERWOOD TYPE- WRITERGOMPANY, or nEwYonmN; Y., A CORPORATIONQF DELAWARE.

I TYPE-XVBITING. MACHINE.

Specification of Letters Patent.

Patented net. 22, 19M.

Application filed May 24, 1912. Serial No. 699.370.

To all whom it may concern:

Be it known that I, CORNELIUS B. Con- CORAN, a citizen of the UnitedStates, residing in borough of Bronx, city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Type-VVnting Machines, of which. the following is a specification. v

This invention relates to typewritingmamechanisms wherein the platen may be released from the line-space Wheel and ad-' justed relatively theretoso as to move the paper a. fraction of a full line-space The principal object of this invention is to provide between the platen and the linespace wheel, a connection which will permit anv desired adjustment of the platen relatively to the line-space wheel, which connection in every position of adjustment is firm enough to prevent accidental slip between these parts in the normal operation of the machine, the connection being also neat in appearance and easily applicable to existing types of machines.

The line-space wheel is loose and may have rigidly connected thereto an internal or annular gear meshing with a pinion mounted upon an arm pivoted on a plate connected to the platen. Mounted on this plate may be a pair of toggles carrying a clutch shoe adapted to frictionally engage the grooved periphery of a disk fixed to the pinion. A wedge may be between the oints of the toggles, which wedge is normally forced in by a spring to keep the clutch shoe tightly in contact with the grooved disk, thereby also forcingthe pinion firmly into mesh with the annular gear, thus eliminating any lost motion which might arise between the pinion and gear. Moreover, any

force exerted on the platen to rotate the same relatively to the line-space wheel, and hence to rotate the pinion about the axis, also tends to increase the toggle effect so as to force the clutch shoe still more firmly into engagement with the grooved disk.

Other features and advantages will hereinafter appear. p

In the accompanying drawings, Figure 1 is a fragmentary perspective view of the line-space mechanism of an Underwood writing machine with the present invention applied thereto. Fig. is a sectional end I illustrating view, partly broken away, illustrating the position of the parts when the clutch is set. Fig. 3 is a view similar to Fig. 2, illus trating the position of parts when the clutch is released. Fig. is a sectional elevation the clutch operating device forced outward .in position to set the. clutch. Fig. 5 is a view similar to Fig. 4, illustrating the clutch operating device forced inward into position to release the clutch. Fig. 6 is a detail perspective view illustrating the various parts of theclutchmechanism detached from each other. i i

The usual line-space operating lever 1 is mounted on the carriage .2 of a typewriting machine and actuates a bar 3 carrying a pawl -fi.- engaging the teeth 5 of liiicsrace. wheel 6 on the platen axle ,7 upon which is fixed the platen S. Detcnt 5) engaging the teeth of the line-spacc wheel holds the latter in adjusted position, for the ordinary line-spacing. All of this mechanism is. found in the usual type of Underwood writing machine.

. The line-space wheel 6 is loose upon the axle 7 and is clutched to and unciutched therefrom as follows: from the platen turning seated in a recess 13 of the hub or sleeve 1 1- of the knob. Connected to finger-piece 11 is a pair of rods 15 passing freely through apertures 16 formed in the knob. At their inner ends these rods are secured to a collar 17 secured to a sleeve JR slidably mounted on the platen axle, The inner end of this sleeve is formed 'intoa Projecting outward knob 10 is a finger piece 11, held outwardly by a spring 12 wedge 19 having outwardly inclined faces l9 passing through an opening 9.1 formed in a plate 20 fixed to the platen shaft. Pivoted on plate 20 is a pair of arms 99 having pivoted thereto another pair of arins 29 is provided which forces the arms27 outward, thus normally holding the pinion yieldablv in mesh with the annular gear.

It will be seen that the arms 22 and 23 form a pair of toggles which are engaged ad acent their knees by the inclined faces 19 of the wedge 19. The spring 12 normally holds the finger-piece 11 outward, thus forcing the inclined faces 19 of the wed e into engagement with the toggles,

' line-space wheel.

tending to straighten them out and to force the clutch shoe 24 firmly into engagement with the grooved disk.. The pinion- 26 is thus held from rotation about its axis, and is brought tightly into mesh with the teeth of the annular gear 28. The annular gear in its motion then carries with it the plate 20, axle 7 and platen 8 fixed thereto. The gear 28 thus forms a driving member operating through the driven member or pinion 26 to rotate the platen as a unit with the By reason of the tight mesh between the annular gear and pinion, all lost motion between these members is avoided, and the platen is thus held rigidly I to the line space wheel. When the'opera tor desires to disengage the platen from the the clutch shoe and to swing arms 23, thus giving rise to a toggle action tending to force the shoe still more firmly into engagement with the grooved disk. Suitable means is provided for guiding the toggles and clutch shoe so as to maintain them in alinement with the grooved disk and to take up the thrust of the wedge. This means consists of a plate 30 straddling the platen axle and fastened to plate 20 at any suitable point as to bosses 31 and 32 projecting therefrom, to the latter of which bosses arms 27 are also pivoted.

A cup 33 may be provided to inclose the parts of the clutch mechanism. This cup may be attached in any suitable manner to the line-space wheel, as by being threaded or screwed to the extension of the annular gear. I

Variations may be resorted to within the scope of the invention, and portions of the I improvements may be used without others.

Certain of thefeatures herein disclosed are claimed in application No. 637,049, filed July 6, 1011, including the large gear, the pinion in mesh therewith, and means for preventing rotation of the pinion upon its own axis, thereby locking the line-space wheel and platen together; and in application No. 772,545, which is a division of 1. In a typewriting machine, a platen, a

line-space wheel, a gear secured to said wheel, a pinion mounted so as to be movable into positions to tightly or loosely mesh with the gear, said pinion being connected to the platen shaft, and means movable into and out of braking connection with said pinion, said means also moving said pinion bodily into tight mesh with said gear.

2. In a typewriting machine, a platen, a line-space wheel, a gear secured to said wheel, a pinionmeshing with the gear, a brake wheel or disk secured to the pinion, a clutch shoe movable into and out of engagement with the brake disk, and toggle mechanism for actuating the shoe.

3. In a typewriting machine, a platen, a line-space wheel, a gear secured to said wheel, a pinion meshing with the gear, a brake wheel or disk secured to the pinion, a clutch shoemovabl into and out of engagement with the brake disk, a toggle for actuating the shoe, and a Wedge for operating the toggle.

4. In a typewriting machine, a platen, a line-space wheel, a gear secured to said wheel, a pinion mounted so as to be movable into positions to tightly or loosely mesh with the gear, said pinion being connected to the platen'shaft, means movable into and out of braking connection with said pinion, said means also moving said pinion bodily into tight mesh with said gear, and a spring for operating said means.

In a typewriting machine,a platen axle, a line-space wheel, a gear secured to said wheel, a pinion meshing with said gear, a support for said pinion, said support being movable transversely to the platen axle, a clutch shoe movable into and out of connection with the pinion, and toggle mechanism for actuating the shoe.

6. In a typewriting machine, aplaten axle, a line-space wheel, a gear secured to said wheel, a pinion meshing with said gear, a support for said pinion, said support being movable transversely to the platen axle, a clutch shoe movable into and out of connection with the pinion, toggle mechanism for actuating the shoe, and a wedge for operating the toggle.

7 In a typewriting machine, a platen axle,

a line-space wheel, a gear secured to said wheel, a pinion meshing with said gear, a support for said pinion, said support being movable transversely to the platen axle, a clutch shoe movable into and out of connection with the pinion, and a pair of toggles for actuating the shoe, the latter being mounted on said toggles.

Ina typewriting machine, a platen axle, a line-space wheel, an internally toothed gear secured to said wheel, a pinion m hing with said gear, a support for said pinion, said support being movable transversely to the platen axle,, a clutch shoe movable into and out of connection with the pinion, a pair of toggles for actuating the shoe, and a wedge forspreading said toggles.

9. In a typewriting machine, the combina tion of a platen, a line'spaoe wheel, a gear secured to said wheel, a pinion meshing with said gear, a support for said pinion, said support being movable transversely to the platen, a clutch shoe movable into,and out of connection with the pinion, toggle mechanism for actuating the shoe', and means for guiding the shoe in. its movement.

10. In a typew-riting machine, a platen axle, a linespace wheel, an annular gear secured to said wheel, a plate secured. to the axle adjacent to the wheel, arms pivoted on said plate, a pinion rotatably mounted in said arms and meshing with said gear,apair of toggles mounted on said plate, a clutch shoe carried by said toggles, a wedge passing through said plate and engaging said toggles, aplaten rotating knob secured to the platen axle, and means projecting outwardly from said knob, and connected to said wedge for operating the same.

11. In a typewriting machine, a platen axle, a line-space Wheel, an annular gear socured to said wheel, a plate secured to said axle adjacent to the wheel, arms pivoted on said plate, a pinion rotatably mounted in said arms and meshing with said gear, a pair of toggles mounted on said plate, a clutch shoe carried by said toggles, a plate secured to said first mentioned plate and spaced therefrom for guiding said toggles, a wedge passing through said first mentioned plate and engaging said toggles, a platen rotating knob secured to the platen axle, and means projecting outwardly from said knob, and COIIIH'H ed to said wedge for operating the same.

12. In a typewriting machine, a platen axle, a line-space wheel, a gear secured to said wheel, a pinion meshing with the gear,

,a peripherally grooved friction wheel or disk secured to the pinion, a wedge faced clutch shoe movable into and out of engagement with the 'l'IlCtlOIl disk, and toggle mechanism for actuating the shoe.

13. In a ftypewriting machine, a platen axle. a line-space wheel, a gear secured to said wheel, a pinion radially movable with respect to the gear and yieldably held to' mesh therewith, a peripherally grooved fric-' tion wheel or disk secured to the pinion, a wedge faced clutch shoe movable into and out of engagement with the friction wheel, and toggle mechanism for actuating the shoe.

14. In a typewriting machine, the combination of a platen axle, a platen secured thereto, a line-space wheel, an annular gear secured to said Wheel, a pinion within said gear and movable into'tight or loose mesh with the gear, said pinion being eccentrically connected to the platen axle, and means movable into and out of clutching connection with said pinion, said means also moving said pinion bodily into tight mesh with said gear.

15. In a typewriting machine, the combination of a platen, a line-space wheel, a gear secured to said wheel, a pinion meshing with the gear, a friction wheel or disk secured to the pinion, a clutch shoe movable into and out of engagement with said disk, and means to actuate said shoe.

16. In a typewriting machine, the combination with a platen and a line-space wheel, of a train of connections connecting them and comprising a gear, a pinion in mesh with the gear, a friction disk secured to the pinion, and a clutch .shoe movable into and tion with a platen and a line-space wheel,

ofmeans connecting them and comprising an annular gear, a pinion meshing there with, means connected with said pinion and forming a clutch surface, a cooperating clutch member, and mechanism to move the latter into and out of engagement with said clutch surface.

19. In a typewriting-machine, the combination with a platen axle, of a line-space wheel loose thereon, an internally toothed gear connected to the line-space wheel, a pinion meshing with said gear, a swinging member carrying said pinion and pivoted eccentrically of the platen axle to a member rotating with the axle, and friction mechanism for holding the pinion against rotation on its axis.

20. In a typewriting machine, the combination with a platen axle, of a line-space wheel loose thereon, an ,internally toothed gear connected to the line-space wheel, a,

eccentrically of the platen axle to a member rotating with the axle, a friction disk carried by said pinion, a brake shoe, and mechanism to move the brake shoe into and out of engagement with said friction disk.

21. In a typewriting machine, the combination With a platen and a line-space wheel,

of means connecting them and comprising an annular gear, a pinion in mesh with said gear and movable in a substantially radial direction, a friction disk carried by said pinion, a brake shoe movable in a substantially radial direction to grip said disk and also to jam the pinion against the annular gear, and mechanism to operate the brake shoe.

22. In a typewriting machine, the combination with a platen axle, a platen secured thereto and a line-space Wheel loose on the axle, ofan annular gear carried by the line space wheel, a plate fixed to the platen axle, a pinion in mesh with the annular gear, arms carrying said pinion and pivoted to said plate eceentrically of the axle, a friction disk carried by said pinion, a brake 'shoe, toggles connecting the brake shoe and said plate, and a wedge for actuating the toggles.

23. In a typewrltlng maclnne, the combination with a platen and a line-space wheel, of a connecting train comprising an intermeshing gear and pinion, a friction disk secured to said pinion, a clutch shoe movable into and out of engagement with said disk, and means to operate said shoe and simultaneously force the members of said train together.

24. In a typewriting machine, the combi nation with a platen, of a line-space wheel, a train connecting them and comprising intermeshing gearing and a friction clutch, said clutch comprising a member rotatable with a member of said gearing and an engaging member, and means to operate the latter.

25. In a typewriting machine, the combination with a platen, of a line-space wheel, a train connecting them and comprising inter-meshing gearing and a friction clutch, said clutch comprising a member rotatable with a member of said gearing and an engaging member, and toggle mechanism formoving the latter into and out of frictional engagement with the rotatable member.

CORNELIUS B. CORCORAN. Vitnesses':

JULIUS DUcKsTIxn. Trrns H. ICONS.