US423945A

US423945A - Type-writing machine

Info

Publication number: US423945A
Authority: US
Publication date: 1890-03-25
Anticipated expiration: 1907-03-25

Description

(No Model.) 2 Sheet sSheet 1. J. H. OSGOOD.

TYPE WRITING MACHINE. No. 423,945. Patenteg Mar. 25,1890.

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J. H. OSGOOD. TYPE WRITING MACHINE.

No. 423,945. Patented Mar. 25, 1890'.

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UNITED STATES PATENT OFFICE.

JOSEPH H. OSGOOD, OF PEABODY, MASSACHUSETTS.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 423,945, dated March 25, 1890.

Application filed August 9, 1889.

To all whom it may concern:

Be it known that I, JOSEPH H. OSGOOD, of Peabody, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Type-Writing Machines; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification. 1 Y

My invention relates to type-writing machines; and myjmprovements are more particularly applicable to the caligraph typewriter.

The objects of my invention are principally the following: To relieve the stationary rod which supports the back of the carriage from the weight and pressure of the same, to reduce the friction caused by the sliding of the carriage to the minimum, to give a more uniform and easier motion of the carriagethan heretofore, to readily and instantly regulate the driving power or force of the carriage, and to render the racks steadier and their movement more uniform and exact than in the present constructions.

In the accompanying drawings, Figure 1 illustrates a rear elevation of a caligraph typewriter with my improvements applied thereto, and Fig. 2 is a transverse section through the line a a of Fig. 1. Figs. 3 and 4 are modifications.

Similar letters represent like parts in all the figures.

A is the ordinary top plate of the frame of the machine.

B is a horizontal rail having the two parallel arms a a extending downward from the ends of the same, and by which said rail B is secured to the back of the top plate A.

O is the ordinary stationary upper carriageshaft or the rod upon which the carriage slides, the'usual lower rod being omitted as unnecessary in connection with my improve ments. The rod 0 and the rail B are parallel with each other.

D is the ordinary horizontal pivotal rod or shaft, which is fixed to the back of the papercarriage and which is adapted to turn with Serial No. 320,286. (No model.)

the same in its hearings on the back of the carriage-frame.

E E are the double sleeves or yokes, which loosely encircle the two rods 0 and D, thus pivotally connecting the carriage with the rod 0. 'These yokes or sleeves are prevented from longitudinal play 011 the rod D by the usual collars Z2 b, but allowing said rod to rotate in the yokes E E. As the usual lower carriage shaft or rod is omitted, the yokes E E end just below the rod 0, and the usual forked piece at the lower end of the yoke for inclosing said lower rod is dispensed with.

F is the ordinary double rack, which is secured to the backs of the sleeves or yokes E E.

G is a stud secured at one end to the back of the stationary rack f and extending outward beyond the carriage. This stud forms a rigid journalbearing for a loose wheel or roller H, which rides on the top of the rail B. I is a vertical arm, which is secured to the outer end of the stud or journal G, and this arm has an inwardly-proj ecting lug or arm t at its lower end extending under the rail B. The free end of this lugt' may extend upward and behind the rail B to form a stop, so as to better )prevent the rack from flying up. (See Fig. 3.

K is the ordinary driving-arm, and L is a flexible link connecting the upper end of the arm K with the upper portion of the arm I; and this link may be a chain, as shown in the drawings, or of any other flexible construction.

M is an adjusting-link or take-up for regulating the working length of the flexible link L, by connecting different portions of the same. I prefer that this adj usting-link should be elastic and in the form of a spiral spring having two hook ends'for entering the links of the chain L, as shown in the drawings; but said link or take-up may be rigid and of any appropriate construction, as that of a double hook.

By dispensing with the ordinary lower carriage rod and using instead the construction above described, the sliding friction which was consequent uponthe use of said rod and the old construction is avoided, anda rolling friction through the roller H and rail B is substituted instead; also, by the outward and downward pull of the driving-arm K on the upper part of the arm L, the stud G will act as a lever, and its inner end will be lifted, and with it the rack f and yoke E, thus relieving the pressure of the back of the carriage on the rod 0. The flexible link or chain L allows a freer, easier, and more uniform movement of the carriage than a rigid link, which allows very little play to its connected parts.

The take-up or adjusting link M allows the driving power of the arm K to be increased or decreased in a moment by shortening or lengthening respectively the link L.

The projecting arm or lug 2' serves asa stop by coming in contact with the lower surface of the rail B to prevent the back of the carriage, its rack and connecting parts, from flying up when the carriage is drawn forward, and also to prevent the disengagement of the racks from the letter-space dog caused by the lifting of the former.

By reason of the double rack F bein sustained on both sides, between the fixed rod 0 on one side and the roller II on the other side, (which roller is held in position by the arm I and its lug 'i,) and said rod and roller being about equidistant from each other, the rack is held more firmly in its position, and its action is more uniform, steady, and exact than when said rack is supported entirely at one side on the yoke, as in the present construction.

In order that there should be a greater leverage upon the stud G it should extend outward beyond the roller, and the lug t should be longer and extend a little below the rail B. (See Fi I have shown in Fig. 1 only one roller II and arm I; but two or more may be used, as shown in Fig. 4, and in this figure the studs G are shown as attached to the yokes E. In this case the paper-carriage will be virtually supported and ride on three wheels, the two at the back and the usual one in the front, while the rod 0 serves as a guide and to give the requisite steadiness to the movement of the carriage.

\Vhat I claim as new, and desire to secure by Letters Patent, is-- l. The combination, with the traveling paper-carriage, the stationary carriage-rod, and the guiding-supports on said carriage for engaging with and resting on said rod, of a horizontal rail on the back of the machine-frame, a roller or rollers journaled on the carriage for riding on said rail, and means for relieving the carriage-rod of the weight of the carriage, all substantially as shown and described.

2. The combination, with the traveling paper-carriage, the stationary carriage-rod, and the guiding-supports on said carriage for ongaging with and resting on said rod, of a horizontal rail on the back of the machine-frame, a yoke or sleeve encircling the carriage-rod, a link-stud fastened to said yoke or to its connecting-plate, a roller journaled on said stud, and means for raising the inner end of the stud, the yoke, and the paper-carriage, all substantially as shown and described.

The combination, with the traveling paper-carriage, the stationary carriage-rod, and

the guiding-supports 011 said carriage for engaging with and resting on said rod, of a horizontal rail on the back of the machine-frame, a yoke or sleeve encircling the carriagemod, a link-stud fastened to said yoke or to its connecting-plate, stud G, roller I-I, arm I, and means for drawing down the upper end of said arm and thus raising the inner end of the stud, and the paper-carriage, all substantially as shown and described.

4. The combination of the traveling paper-carriage, the horizontal rail on the back of the machine-frame, a roller journaled on the carriage for riding on said rail, an arm connected to the journal of said rollerythe driving-arm K, and a flexible link connecting said driving-arm with the arm attached to the roller-journal, substantially as shown and described.

5. The combination of the traveling paper-carriage, a horizontal rail on the back of the machine-frame, a roller journaled on the carriage for riding on said rail, an arm connected to the journal of said roller, drivingarm K, a flexible link connecting the same with the arm attached to the roller-journal, and a take-up or link adapted to connect the flexible link at different points, all substantially as shown and described.

(5. The combination of the traveling paper-carriage, a horizontal rail on the back of the machine-frame, the stationary carriagerod, and a yoke or sleeve encircling the same, a link-stud fastened to said yoke or to its connecting-plate, stud G, roller II, arm I, driving-arm K, and a flexible link connecting the arms I and K, all substantially as shown and described.

7. The combination of the rack F with two traveling supports for the same secured to said rack on either side, substantially as shown and described.

8. The combination of the rack 1 with the yoke and rod 0 and with the link-stud G, wheel II, and rail 1 all substantially as shown and described.

JOSEPH II. OSGOOI). \Vitnesses:

PENNINGTON IIALSTEI), HENRY W. APEL.