US1376879A - Typewriting-machine - Google Patents

Description

J. B. HOLDEN.

.TYPEWRITING MACHINE. 'APPLICATION FILED ocnao. 191

Patented May 3,1921.

2 SHEETS-SHEET I.

QW m NV w n S ...H. ..M Qw i .vl HM I .M mw d m S S a w .5 mm w w m #NVENTEIR WITNESSES iu L HIS ATTEIRNEY 1. B'. HOLD EN.- TYPEWRITI'NG MACHINE. APP LICA'i'ION FILED OCT- 30, I919- Patentd May-3, 1921. I HEET 2- INVENTOR WITNESSES of w HIS ATTORNEY UNITED res creme.

JOSEPH B. HOLDEN, or sang-rouse, ew YORK, rissre on ro' REMINGTON TYPE- WRITER COMPANY, or name, new roan, A conronarroN or NEW YORK.

rYrEn'rRrriNe-ivra.CHI E.

Specification of Letters Patent. P tent d M y 3, 1921,

Application filed October so, 1919. Serial No. 334,389.

devices thereof. My improvements were designed primarily for use in a light, portable machine and there are especially adapted for such machines, but they are also capable of use in larger typewriters.

My invention consists in certain features of constructions and combinations and arrangement of parts all of which will be fully set forth herein and particularly pointed out in the'claims.

One embodiment of. my invention is illustrated in the accompanying drawings in which Figure 1 is a front elevation of the carriage of a 'typewriting machine.

Fig. 2 is a top plan view of said carriage with most of the platen and paper deflector broken away.

Fig. 3 is a rear elevation of the same.

Fig. 4 is a detail view partly in section on the line a"09 of Fig. 2.

Fig. 5 is a detail view in section on the line 7 1,/ of Fig. 3.

Figs. 6 and 7 are front to rear sectional views about on the line of Fig. 2, the former showing the paper feed devices in normal position, and the latter in released position.

Fig. 8 is an end elevation of the righthand end bracket of the carriage and the paper feed release handle and associated devices, parts being shown in section about on the line c-c of Fig. 3. v

- Figs. 5, 6', 7 and 8 are on an enlarged scale. In the drawings parts have been omitted, or broken away, or shown in section, as has been found convenient.

My invention is here shown applied to a top strike machine, the type bars (not shown) being adapted to strike down against the upper surface of a platen 1. Said platen is mounted in a carriage, the principal member of which consists of a bar 2 of stiff sheet metal and said bar at each of its front and rear parts is bent first downward and outward, and thence downward and inward to form ball bearlng raceways for balls '3,

-which run in stationary grooved rails 4,

said rails being mounted at their ends on brackets 5. Said brackets are parts of a typew-rlting machine of the general character illustrated in the application of A. W. Smith filed Sept. 27, 1919, Sr. No. 326,705. It will, of course, be understoodthat the general construction of the machine can be of any suitable sort as far as the present invention is concerned. In the present instance,brackets '6 consisting of plates of sheet metal suitably out out andbent up, are secured to the upper surface of the bar 2, one at each end thereof, and in these brackets are secured bearings 7 for the shaft 8 of the platen 1. Y v Q The paper feed devices include rear main feed rolls 10, front main feed rolls 11, a paper deflector 12, a presser plateand paper scale 13, certain foldable arms 14:, andvari- 1 one associated devices.

Most of the paper feed devices are mounted on the carriage bar 2 through the instrumentality of two hinge-plates 15, each lying flat against the upper surface of said bar'and secured thereto by screws 16. In order to facilitate accurate positioning of these devices dowel pins 17 are permanently attached to the plate 2 and pass through holes made in the plates 15. Said plates 15 can be variously shaped so as to provide the necessary hinges and other means of support for the paper feed devices and if desired for other devices on the carriage. In the present instance nearly all of the paper feed 1 mechanism can be very quickly removed from the machine by removing these two plates and almost as readily replaced.-

At suitable points along its front and rear" edges each of said plates has projecting tongues 18 bent into cylindrical form tosupport several hinge-pins 20 on which the pivoted parts of the paper feed mechanism are mounted.

The supporting devices for the rear feed rolls 10 include a long bar 21 extending for a considerable part of the length of'the platen and at suitable points 22 hinged to the rear pins 20 so that said bar can rock front and back of the'machi'ne. This bar is made of sheet metal and its hinge sections 22 are bent up in a familiar manner. For,

the sake of stiffness said bar has a longitu-= dinal'rib '23 stamped therein and extending the greater part of its length. Projecting from the upper edge of the bar 21 are two arms 24 the shape of which will be understood by comparing Figs. 3, 5 and 6. These arms are in the nature of tongues bent first at an inclination toward the rear. of the machine and thence. at 25 (Fig. 5) vertically upward and thence toward the rear at an upward inclination as shown in Fig. 6. On the upper end of each of these arms 24 one of the paper supporting arms 14 is pivoted on a screw 26 having a friction washer 27 thereunder. 14 has an ear 28 bent downward therefrom and acting as a stop. The construction is such that the two arms can be extended outward toward the rear as shown in Fig. 6 and can be folded in so that they overlap one another as shown in Figs. 2 and 3 in order to diminish the dimensions of the machine when not in use. The cars or lugs 28 serve as stops to limit the pivotal motion of the arms 14 when swung to both folded and working positions. It will of course be understood thatthese arms 14 are not essential but they are convenient for giving a better support for the paper behind the platen so that when writing near the bottom of a page a greater part of the written page is spread out before the eye of the operator. The feed rolls 10 are mounted indirectly on the bar 21 in pairs in such a way that spring pressure on the pair of rolls is evenly balanced between them and said rolls can accommodate themselves to unequal thicknesses of paper. In the present instance, there are two of these pairs of rolls and a description of one of them and its supporting device will answer for the other also. The pair of rolls is mounted in a lever-like bar or evener 30 having projecting from its upper edge four tongues 31, each at its upper end rolled intov a cylinder to support a pin or shaft 32 on which the two rolls 10 are j ournaled, the single pin'32 extending the entire length of the bar 30 and fastened to both rolls. In the present instance said pin is exposed between the two middle tongues 31 as shown in Fig. 2, but this is not essential. The bar 30 is loosely mounted on the long bar, 1 in the manner shown in Fig.

5 although any other loose connection capable of a limited extent of universal motion would serve instead of the precise construc tion shown. A shouldered bushing 33 extends rearward from the bar 21 to which it is secured by a headed rivet 34 passing through said bushing and bar. The re duced. outer end of the bushing 33 passes loosely through the hole in the bar 30, front and'back motion of said bar being prevented bythe shoulder of the bushing on the one side and by the head of the rivet 34 on the Each of said arms other. Said shoulder and head however are spaced apart a distance slightly in excess of the thickness of the bar 30 so as to admit of a slight'rocking of said bar in any'direction as far as this connection is concerned. Rocking of said bar about the axis of the bushing 33 and rivet 34. is substantially prevented however by the arm 24 heretofore a vertical axis passing through the rivet .34. Thus if there is a greater thickness of paper under one of the two rollers 10 than under the other the bar 30 readily accommodates itself to this situation and maintains'the same spring pressure on both rollers. As will presently appear the spring pressure is applied to the bar 21 and it is transmitted to the feed rolls by the arm 24, the bend 25 of which comes substantially at the point where said arm passes up behind the pivot rod 32 as is best shown in Fig. 5, where it will be seen that spring pressure tending to move the bar 21 toward the platen will bev communicated to said rod 32 half-way between the two rolls 10. It will be seen that these arms 24 would be needed as part of the pressure roll mechanism independently of their function of supporting the arms 14.

in order to apply spring pressure to the bar 21 said bar has two tongues or arms 35 projecting from its lower edge and bent toward the front of the machine as shown in Figs. 6 and 7, each of them, for purposes associated with the releasing of the feed rolls, formed with an upwardly bent projection or hump 36. Preferably each of these two arms 35 is situated as shown in Fig. 3 in about the same fore and aft vertical plane as one of the rivets 34. Near the middle of the carriage a plate 37 of sheet metal is secured to the bar 2 by screws 38 as shown in Figs. 2 and 4 and said plate has right and left hand projections each of which is bent upward at its front and rear ends to form ears 40 to support two wire springs 41. Said springs project in right and lefthand directions from their support one of them lying on top' of the arms 35 to apply spring pressure to the rear feed rollers and the other wire lying on top of somewhat similar arms coming from the supports of the front feed roller as will be more fully described presently. It will be perceived that the same amount of spring pressure is applied to the two arms 35 and in each instance this pressure is transmitted to a pair of feed rolls. 10 and is evenly distributed between the two rolls of the pair.

The front feed rolls 11'are mounted in a manner to give a fairly even distribution of spring pressure but their supports are simpler than those of the rear'feed rolls. All four rolls 11 are here shown mounted on a frame stamped out of a single piece of sheet metal comprising a bar 42, Fig. 1, with arms 43 projecting downward from its ends and each rolled into a cylinder to embrace one of the front hinge pins 20, whereby the bar is pivoted to rock in a front and back direction. Just inside each of the arms 43 there is another arm 44 which is bent toward the rear of the machine beneath the platen and above the carriage bar 2 and on which one of the wire springs 41 presses downward. Preferably the inner ends of the arms 44 overlap and lie just above the ends of the arms 35, this relation being useful in releasing the paper feed devices-as will presently appear.

The front feed rolls are mounted in pairs, each pair being supported on a cross bar 45, Figs. 1 and 2, said cross bar being connected with the bar 42 by an integral arm or neck 46 situated midway between the two rolls, as shown in Fig. 1. Each bar 45 and neck 46 constitutes a T-shaped extension of the bar 42, and there is a roll 11 mounted in each side of the cross-bar 45 of each T. The construction is such that the spring pressure on the two rolls is equalized to a certain extent by the flexibility of the parts themselves, a slight amount of rocking of the bar 45 being possible due to its support at its middle on neck 46. Each of the bars 45 has four upwardly projecting tongues 47 two for each feed roll 11, and a single pin or axle 48 passes through both rollers and through all four of the tongues 47 each of which at its upper end is formed into a cylinder for the purpose. Bars 42 and 45 are all made stiff enough to apply the requisite spring pressure to the rollers and to maintain them in place, but there is enough give in the system to afford some degree of equalization of spring pressure although not to the full ex tent of that provided for the rear feed rolls 10. It will be noted that any tendency to cant about a horizontal front to rear axis is resisted by the fact that such tendency comes edgewise on the metal whereas when pressure is applied to move one of the rolls away from the platen, this comes against the flat side of the metal in which direction it can bend much more readily.

The deflector 12 is curved about the under side of the platen and it extends up in front of the machine about to or slightly above the front feed rolls 11 and at the back it extends a suflicient distanceiabove the rolls 10 to serve as a paper table, in which last mentioned function it may be supplemented by the arms 14., Said deflector is, of course, suitably cut out as shown at 50 in Fig. 7 for the accommodation of the various feed rolls. Atthe ends'of its front edge said deflector has two tongues 51 projecting therefrom and bent horizontally toward the front of the machine and said tongues carry the pressure bar and scale plate 13 which is se cured tothem by screws 52 and nuts 53. This bar 13 is an angle bar as shown" in Figs. 6 and 7 which gives it the required stiffness, the forward flange of it being horizontal and lying on the ears 51 and the rear flange lying at a suitable angle and terminating at a suitable distance in front of the. writing line on the top of the platen. As

shown in Fig. 2 this plate may have a suitable scale along its rear edge to serve as a platen scale and another along its forward edge for cotiperation with any suitable pointer to serve as a carriage scale.

The deflector is pivoted to the forward hinge pins 20. To this end suitable arms 54, Figs. 1, 6 and 7 are secured as for er ample by spot welding or riveting to the underside of the deflector and these are pivoted to the pins20 atthe front of the carriage. In Fig. 2 most of the deflector is broken away but. I have indicated the position of the arms 54 by broken lines.

In order to apply light spring pressure to the deflector to press the bar 13 yieldingly against the paper, any suitable spring means can be provided, that shown consistcome down, one in front of each of the pivot rods 48, where said rod is exposed between the two middle arms 47 as shown in Figs. 1, 6 and 7 The position of these ears is indicated by broken lines in Fig. 2.

The paper feed release devices are operated by a handle '57 constituting the upper part of one arm of a bell crank pivoted on a screw 58 to the inner face of the righthand carriage bracket 6. Said bell crank has a rearwardly directed arm 60 offset toward the left as shown and terminating in a cam edge 61, Figs. 3 and 8. The follower for the cam 61 consists of the pin62 projecting from the right-hand end of the bar 21. The bell crank 57, 60 normally occupies the position shown in Figs. 3 and 6 and in full lines in Fig. 8. When the han dle 57 is pulled toward the front of the mathe pin 62 and bar 21 toward the rear, re-

leasing the 'rear feed rollers 10 as shown in Fig. 7. This motion of the bar 21 moves the arms 35 upward against the pressure of the wire spring 41, and the humps 36 on said armselevate the arms 44: of the forward feed roll support, releasing said forward feed rolls as shown in Fig. .7. As the forward feed rolls move toward the front of the machine the pins or axles 48 come in contact with the downwardly bent portions of the ears 56 and draw the deflector slightly toward the front of the machine, relieving the pressure of the scale plate 13 on the platen. Preferably, the lowermost part of the cam 61. is made concentric with the bell crank 57, 60 or so nearly so as to act as a dwell so that the parts will remain in cast off position. 7

Said bell crank 57, 60 has projecting therefrom an arm 63 which strikes against the bearing piece 7 to limit the motion of said bell crank in one direction and the upstanding arm of the bell crank striking the same bearing piece, limits the motion of said bell crank in the opposite direction.

Various changes may be made in the details of construction and arrangement without departing from my invention.

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

1. In a typewriting machine, the combination of a spring-pressed bar, a carrier for two feed rolls, said carrierhaving a loose connection with said bar and said bar hav ing in addition an arm acting on said car rier midway between said rolls, said loose connection and said arm together acting to prevent canting of said carrier into a skewed position but permitting such roclning of said carrier as is required to equalize the spring-pressure on the two roll 2. In a typewriting machine, the combination of two. feed rolls in axial alinement,

a support for said feed rolls, and a springpressed part which carries said support, said support and said part being loosely connected at two points midway between said rolls whereby the spring pressure is evenly divided between said rolls.

3. In a typewriting machine, the combinationof a spring-pressed part, a support for holding two feed rolls in axial alinement, a loose connection between said sup port and said part, and an arm of said part passing through an opening 'insaid support and acting midway between. said rolls to apply pressure to said support and through it to said rolls.

4:. In a typewriting machine, the combination with a carriage anda platen mounted therein, of a spring-pressed bar hinged to said carriage and having two arms, two

feed roll supports, each loosely connected with said bar below one of said arms and each having an opening through which the associated arm passes, and a pair of feed rolls on each of said supports, one on each side of the associated arm.

5. In a typewriting machine, the combination with a carriage and a platen, of a bar hinged to said carriage and having near each end thereof a T-shaped integral extension 45, 46 and four feed rolls one mounted in each cross arm of each of said T-shaped extensions.

6. In a typewriting machine, the combination with a carriage and a platen, of a sheet metal feed roll support hinged to said carriage and comprising a cross-bar and two integral T-shaped extensions carrying feed rolls one on each side of the cross bar of each T-shaped extension, said sheet metal support being sufficiently flexible to allow of a substantial movement of one of said feed rolls farther away from the platen than anoth r and means for applying spring pressure to said support.

7. In a typewriting machine, the combination with a carriage and a platen, of an integral sheet metal feed roll support, said support comprising a cross bar, two T- shaped extensions connected by said cross bar and each extension having two feed rolls mounted therein and said support also comprising two spring-pressed arms one oppositc each of said T-shaped extensions, said cross bar and said T-shaped extensions being sufiiciently flexible to allow of a substantial movement of one of said feed rolls farther from the platen than another.

8. In a typewriting machine, the combination with a carriage and a platen, of a feed roll support hinged to said carriage at the front of the platen, a second feed roll support hinged to said carriage at the rear of the platen, arms extending inward from said two supports and one arm overlapping the other, and a feed roll release device acting on one of said supports and communicating its releasing movement to the other support through said overlapping arms. I

9. In a typewriting machine, the combination with a carriage and a platen, of a feed roll support hinged to saidcarriage at the front of the platen, a second feed roll sup port hinged to said carriage at the rear of the platen, arms extending inward from said two supports and one arm overlapping the other, ecd roll release device acting on one of said supports and communicating its releasing movement to the other support through said overlapping arms, and springs acting on said overlapping arms to apply pressure to the feed rolls.

10. In a typewriting machine, the combination with a carriage and a platen, of a hinge member detachably secured to saidcarriage, a front feed roll support hinged to the forward edge of said member and a rear feed roll support hinged to the rear edge of said member.

11. In a typewriting machine, the combination with a carriage and a platen, of a sheet metal plate detachably secured to said carriage and having its front and rear edges formed into hinge members, a front sheet metal feed roll support hinged to the front edge of said plate, and a rear sheet metal feed roll support hinged to the rear edge of said plate.

12. In a typewriting machine, the combination with a carriage and a platen, of front and rear feed roll supports each having two arms extending inward therefrom under the platen in overlapping relation, two springs each at its ends overlying the two arms of one of said feed roll supports and both secured at their middles to the carriage, and feed roll releasing means acting on one of said supports, the releasing movement being communicated to the other support through said overlapping arms.

13. In a typewriting machine, the combination with a carriage and a platen, of a releasable feed roll support, a paper deflector having arms whereby it is hinged to the carriage and said deflector having two ears 56 projecting over and in front of said feed roll support whereby when said feed roll support is moved to releasing position it carries said deflector part-way with it.

14. In a typewriting machine, the combination with a carria e and a laten ofa del 3 flector curved around the platen, a platen scale plate 13 secured to the forward edge of said deflector and normally pressed against the platen, a releasable feed roll support, and two cars projecting from said deflector in front of said support sothat when said support is moved to releasing position it will carry said deflector and said scale plate part-way with it. v

15. In a typewriting machine, the combination with a carriage and a platen, of a spring-pressed bar hinged to said carriage and having feed rolls mounted thereon and 7 said bar having an extension at one end thereof, and a feed roll release device consisting of a lever having a cam part for engagement with said extension and having also a handle whereby it can be rocked about its pivot.

Signed at Syracuse, in the county of Ononda a and State of New Yorkthis 27 day of fictober, A. D. 1919.

JOSEPH B. HOLDEN.

\Vitnesses: I y

CLAIRE M. FARNUM,

' W, N. BRAND.

Images