US864890A

US864890A - Type-writing machine.

Info

Publication number: US864890A
Application number: US20783004A
Authority: US
Inventors: Carl Gabrielson
Original assignee: L C SMITH AND BROS TYPEWRITER Co
Current assignee: L C SMITH AND BROS TYPEWRITER Co
Priority date: 1904-05-13
Filing date: 1904-05-13
Publication date: 1907-09-03
Anticipated expiration: 1924-09-03

Description

PATENTED $131 1 3, 1907.

G.' GABRIELSON. TYPE WRITING/MACHINE. Armilommn 'PILED um 13. 1904.

3 SHBBTSSHEET 1.

PATENTED SEPT. 1907..

c. G,ABRIELSON. TYPE WRITING MACHINE.

APPLICATION IILBD MAY 13 1904 witmmo PATENTED SEPT. s, 1907.

3 SHEETS-451111111 3.

G GABRIELSON TYPE WRITING MACHINE. 'nruourqn FILED MAY 13. 1904.

v parallel vertical grooves 15in the upper part of the release mechanism, and portions of the main and carsecured toa bracket 9 which is attached to-the top plate of the machine frame by screws 10. An escapewhich cooperate with the escapement wheel to'feed r I'TED STA r ts ATEN CE CARL (IhlBltllilSllX, OF SYRACUSE. XEW 1 01i;

WRITER COMPANY, OF SYRACUSE, NEW' ,eissroxor. TO 1.. sni r'n n) 'rjrriii' YORK, it coRPoPur'rIoXor; xicwrojnkj L TYPE-WRITING MACHINE.

To all whom it may content:

Beit known that I, CARL GABRIELSON, a citizen of the United States, and a resident of Syracuse, county of Onondaga, State of New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

This invention relates particularly to the carriage feeding mechanism of typewriting machines.

The invention will be described in detail in the following specification reference being bad to the accompanying drawing, in which,

Figure 1 is atop plan view of the carriage feedil'g and riage'frames; Fig. 2 is a section on the line AA of Fig. 1, partly broken away; Fig. 3 is an end view of the carriage looking toward the left in Fig. 1; Fig. 4 is a section on the line B B of Fig. 1; Fig. 5 is anend view of the escapement devices looking toward the left in Fig. 2; Fig. 6 is a detail plan view of the escape pawls' and releasing lever; Fig. 7 is a detail side view of the pawls; Fig. 8 is a front elevation of the carriage back bar, showing the carriage spring drum connected thereto, Fig. 9 is a detail view, showing the device for connecting the band to the carriage; and Fig. 10 is a'detail of devices for adjusting the spring tension on the escapement rocker. I Referring to the drawing, (1 indicates the'top plate of the main frameoi the machine, and b indicates the carriage frame, comprising the back bar 1 and side or

end bars

2 and 3. In order to simplify the drawings, the rails upon which the carriage moves transversely of the mainframe, are omitted. A rack bar 4 is secured to arms 5 projecting rearwardly from the carriage frame, and the teeth upon said bar are constantly engaged by a pinion 6 secured upon a shaft 7 which is journaled in a bearing 8, extending at right angles to the rack and ment Wheel 11 is secured to the rear end of the shaft 7, and

dogs

12 and 13 upon a rocker l4 alternately engage the teeth upon the escapeinent wheel and permit the latter to turn step by step when thcrocker arm is vibrated by theoperation oi the key lovers, the car riage being impelled to the left by the carriage spring, in the usual manner, one letter space, each time a tooth upon the escapcment wheel is released. The dogs the carriage, are shown in side view in Fig. 7. Each doghas the form of a bell crank lever with a tooth projecting upwardly from about the center of its longer arm, as shown, and these dogs are arranged within rocker, as shown in Figs. 5 and 6. The holding dog13 is pivoted within its groove in the rocker upon a pin 16 Specification of Letters Patent. Application filed May 13,1904. Serial No. 207,830-

.passing through its eye 17 so that it may oscillate yer Patented tically without longitudinal movement in the groove. The stepping dog. 12 hasa slot 18. through whiclrthc pin 16 extends, and this dogmayoscillatevcrtically and also mox e longitudinally within itsslot in the "rockr-r. the latter mbvement being limitcd'by lhe"lnglllgtii the slot. A plate 19, securedron top of the rockei I the free ends of the dogs, forms a stop to limit thc gup i, ward movement of the dogs. The short arm's their dogs, as shown, are connected by springs 20, extending through openings 21 in the rockerflto. a portiouof the plate 19 extending downwardlyat the'oppositeside of the rocker. These springs normally hold the dogs in their-uppermost positions against the stop 19; but. the dogs are free to swing (lOWIlWil-l'dlY-Yi'llcll111Glull riage is moved to the-right. Meansar'e provided l'or positively moving. the dogs out" otth'e path of the teeth of the escape wheel during thereturn movement of the carriage, which means will-be described hereinafter. J i

The rocker 14 is journaled uponzadjustable threaded pivots 22, 23,- whi'ch turn in threaded

openings ilrlugs

24, 25, of bracket'26. The rocker is normally held with the rear or stepping dog 12 inxengagernent with the escape wheel and the adjustable stop 27'seated against the abutment 28 on bracket .26 by means of a .coiledSO spring 29. Spring 29 has one end connectedeto" the rocker and itsother end connected to the tension adjustingdcrice 30. The pivot screws 2.2, 23, are 'provided with lock nuts and the lock nut 3lshasa journal 32 which forms a bearing for o'neleg oi the ;U-shaped 8 5" tension adjusting device 30. Theother leg of thisdevice is pivoted on the pivot'sorew 22 :(Fig. 10); one end of the spring 29 is passedv through ahole in an extension 33 of the'device 30. r The extension Jr housing, 33 is a portion of a cylinder having an inner. diameter about equal to the out-er'diameterof spring 29 andsaid extension thus iforms a means fornholdingithe, springw concentric withthe'pivot 22 and free from theshaft of" the rocker, thus preventing frictional .contact-oithe spring and the rocker. The tension device SOis adjusted about its pivot to increaseor, decreasej'the ten sion of the spring 29 by means of'an adjustinglscrew 34 mounted-in the lug or. -bracket 24 (Figs. :ldr 5).v it will be noted that the journal 32 is slightly thicker than the leg of the device 30.permitting said device to move. freely when the lock nut '31 is tightagainst the bracket 24. By meansof the screw 34, the tension of the rocker and consequently the tension of thekey :levels-whijchmove therocker through the-usual junive'rsalebar may; be adjusted. In order to release the carriage fromthdescapcmen mechanism for the purpose of ,rnoyingthecarriagedn-t either direction, withoutoperatingtm.keys, I proyidegv a release bar 38 whichis mounted upon thebackof the I rack bar.4 The release bar has neareach-end, ,aslot ,110

or opening 39 extending longitudinally of the bar, and the lower wall of each opening is inclined downwardly from its ends to the center, forming

cam surfaces

39 and 39".- Therlease bar is held insliding engagement .,with the rack bar by means of shouldered screws 40,

extending through the triangular openings 39. The release bar is normally supported in upper central poslots 39 bearing against the screws .or studs 40, by means of a spring 41 connected to a link or stud 42 upon the release bar, said spring being supported on a stud 43 which is secured to the back bar l of the carriage. Be

sition, as shown in Fig32, with the lower angles of the low therelease bar is arranged a vertically movable being supported within arms 49 of the escapement shaft the opposite end of the bar.

bracket. The arm 47has a part 47 extending over the free ends of the

dogs

12 and 13. r

A link 47, shown in Fig.- 2, forms pait of a connection between the release lever 47 and a carriage release key in the key-board.

Itwill be seen that when the release bar 38 is moved either to the right or to the left, the cam surfaces of tlie openings 39 will cause the bar to be depressed against the action of the spring 41, and this depression of the release bar will move the slide 44 downwardly, rocking the lever 47, and the part 47 oi said lever will depress the dogs, thus releasing them from the escapernent wheel so that the carriage may be moved freely in either direction. a

In order to conveniently op vste the release bar, bell crank levers 50 are pivotally ianected to themder side of the back bar 1, and thearms SU of said le-' vers are normally held-in line with rollers 51 uponthe ends of the release' 'bar, and at a short distance therefrom, as shown in Fig. 1, by suitablesprings 52. The

levers '50 are movable into and out of engagement with the rollers upon the release bar, by means of bell crank levers 54 pivoted at 55 on the ends of the carriage, the horizontal arms of said levers having finger pieces 56, and the vertical arms 54 of said levers bear against the levers 50 whichpress the horizontal arms of the levers 54 upwardly into their normal positions against stop P7111557: l v

It will be obvious that the depression'of a lever 54, at either end of the machine, will cause the bell crank 50, at that end of the machine, to move the release bar and thus cause the dogs to become disengaged from the escapement wheel. As the levers 50 normally stand at some distance from the ends of the release bar, it will be evident that the operation of. the release bar by one of said levers will not be interfered with by the lever at The carriage b is c'onnected with the usual spring drum 58 by means of a band 59. At the free end of the band is a hole 60 resembling a 'lcey hole, that is, consisting of a slot having an enlarged end. Beyond the opening 60 the band is bent backwardly forming a -Set forth. 1 p

the rocking of the lever and withdrawal of the pawls 5/ spring tongue 61 having in its end a notch 62 corresponding in width with the slot 60. The tip ends of the branches inclosingthe notch 60 are bent upward as shown at 63 (Figs..8 and 9). The band is connected to a headed pin Olen the carriage as illustrated in Fig. 8. The band is always undertension which draws the pin 6% into the small end of the slot 60. The pin also'normally occupies the notch 62, which registers with the smallend of the slot 60, and the upturned point 63 locks the parts in tliisposition-ahd prevents accidental disengagement of the band from the carriage. When it is desired to disengage the band to free the carriage this may be done instantly by pressing down the spring tongue 61 to free the point 63 from the enlargement 65 of thepin and then drawing the band to the left (Fig.

8). until thehead of the pin registers with the enlargement of the slot 60. This enlargement is of such size as to permit the head of pin 64 to pass through it. The band may thus be instantly disconnected from the carriage and as quickly connected with it. i

It will be understood that the rocker 14 is suitably connected with the key levers so that it will be rocked whenever, ,a key lever is depressed. This construction is common in the art theusualpractice being to con- I nect the rocker with the universal bar. It will therefore be understood that eachtime a key lever is ,depressed to print a characterthe rocker is vibrated and the carriage permitted to move one step, to place it in position to receive the next type impression.

It will be evident thatvarious changes may be made in the details of construction and arrangement of my invention of which one embddiment is herein illustratedand described.

--Tl1erefore, what I claim and desire to secure by Letoperating said lever in any position of the carriage.

2. In a typewriting machine, the combination with the carriage, of a carriage release device comprising a baihaving two pairs of oppositely inclined cam surfaces, pins connecting said bar loosely with the carriage and cooperating with said cam surfaces. a spring for holding said-surfaces against said pins, and means upon the car! ring-e for-moving said bar longitudinally, for the purpose 3. 1n auvpewriting'machine, the combination with the carriage, or the release bar having triangular openings near its ends, pins passing through saidopenings-a spring centrally connected with the bar -to' hold it in normal position, and means ppon the carriage for moving said bar longitudinally to ell'ect the release of the carriage. V

l. In a typewritlng machine, the combination with the carriage feed ratchet and pawls, oi the release lever arrunged to'withdraw the pawls from the ratchet, the'release bar on the carriage. and means whereby the operation of. the, bar longitudinally in either direction effects from the ratchet.

"5. In a typewriting machine. the combination with the carriage and its feed mechanism, of IlleflDSqfOl r leasing the carriage from its feed mechanism comprising a movable bar provided with means adapted to release said.carriage when the bar is moved in either direction longitudinally. 6. In a typewriting machine, the combinationv with the cariiage'and its feed mechanism, of a .bar provided with means to disconnect the carriage from its feed mechanism from the path of the ratchet wheel and a release bar for 1 said bar is moved from mid-position, and means to normally hold said bur in mid-position.

7. In a typewriting' machine/the combination wiiii the carriage and its feed mechanism, of the release hm. ex tending longitudinally of the carriage, and means at each end of the carriage for operating said release bar, said bar being provided with means adapted to release the carriage when it is moved in either direction from its mid position.

8. In a typewriting machine, the combination with the carriage and its feed mechanism, of :1V release her longi tudinally arranged upon the carriage, pins ()1' 1)l0j6(lti0l1. upon the, carriage, reverse inclines orcams upon the bar cooperating with each of said pins or pro" (:tions, :1 spring for normally holding said bar in mid position, and means mmhim, he COUlbillilHQll with Lhe mri'inee and in: i'nlelmi, of :1 vol her, feed pawla "u'i'ied by the roviu-i', e, eoiieii willie sml'omiding the rocker shaft uml conn cted wii'h Hie rorkei, and z'i'cylindiicul housing surrounding said spring and holding it from contact with the rocker shaft, the sto'iionzu'y end of said spring being mnnected to said housing. i

]n Testimony whereof I have signed my name to this spwifieaiion in the presenve of two subscribing Witnesses CARL GABRIELSON.

xs, C. i i'imsmrs.