US510984A - mereitt - Google Patents

Description

(No Model.) 2 sheets- Sheet 1.. M. G; MBRR ITT. TYPE WRITING MACHINE.

No. 510,984. Patented Dec. 19, 1893.

M. e. M EPQR'ITT. TYPE WRITING M'ALGHINE.

2; Sheets-Sheet 2,

(No Model.)

Patented Dec. 19, 1893.

1.! man. a c.

UNITED STATES PATENT. OEFIcE.

MORTIMER G. MERRITT, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO THE MERRITT MANUFACTURING COMPANY, OF SAME PLACE.

TYPE-WRITING MACl-HN E.

SEEGIFICATION forming part of Letters Patent No. 510,984, dated December 19, 1893.

' Application filed January 9, 1893 Serial Ila-457.789. (No model.)

To all whom it may concern.- In the drawings,A represents various parts Be it known that I, MORTIMER G. MERBITT, of the frame of the typewriting machine, the a citizen of the United States, residing at illustration here given being of the well Springfield, in the county of Hampden and known Densmore machine, and B firepro- State of Massachusetts, have invented new sent the main, and auxiliary parts of the and useful Improvements in Type-Writing carriage for the platen roller, 0, said carriage Machines, of which the following is a specifibeing mounted for its longitudinal run on the cation front and rear horizontal support rails D, D.

Thisinvention pertainstoimprovements in The platen carriage has a frame or applito the class of type-Writing machines in which ance, G, at its rear which is engaged so as the platen-rollis mounted on acarriage which to move in unison therewith, the same behasamovement,in the direction of the platen ing to all intents and purposes, so far as axis, past the common impact point for the this invention is concerned, to be regarded characters on the key-operated type-bars, and as a part of the carriage; and it has secured at [5 in conjunction with which carriage is an esan under portion thereof a horizontal and capement mechanism having connection with longitudinally ranging-bar, H, the rear edge each of the key-levers and also the spacehar of which is ratcheted, as indicated at a. for imparting the intermittent letter-space A'form of escapement device is here shown movement to the platen and its carriage. In for the usual co-operative action with the said 20 this class of machines a device is usually emratcheted-bar which is of substantially the ployed for such a throw-out action of the as construction illustrated in Letters Patent of oapement devices relative to the platen-carthe United States granted to George S. Heath riage, that, at will, the carriage may be run under date of May 17, 1892, No. 475,057. endwise any desired distance within the lim-' Other forms of escapement may, however, be

25 its of its movement substituted for this one but the one illus- This invention particularly pertains to an trated is practical and efficient and the imimproved form or construction of the throwproved device which forms the subject matout or shift device for the escapement mechter of this invention is well adapted for 00- anism, and consists, to this end, in the conoperation therewith.

3o struction and combination of parts all sub- It will be briefly mentioned that the cs stantially as will hereinafter full y appear and capement device comprises the carryingarm, he set forth in the claims. I), which is pivotally mounted on the bracket,

R f rence is to be had to the accompany-' o, for a swinging reciprocatory movement in mg drawings i hi h this improved device a vertical plane. This arm, I), has an an- 35 is shown in its application upon a type-writnularly or hook-formed pawl-member, b and ing machine. a longitudinally-sliding and spring-pressed Figure 1 i lan view of the greater porpawl, cl, which is movable reciprocaiingly and tion of the machine including the improved longitudinally on the arm, I), and is, with said escapement hift. Fig. 2 is a vertical, crossarm, bodily movable vertically and trans 4o sectional view of parts of the machine comversely 1n the reciprocatory movements of go prising, and adjacent to, the escapement and the arm. Each time a key is depressed and i ft, as when on line 2-2, Fig. l, the permitted to return to its normal position,the improved device being shown in its normal arm, I), is vertically rocked carrying the part, position, while Fig. 3 is substantially a simi- 12 out of engagement with the ratchetcd bar View howing the shift device moved in and bringing the pawl, (Z, into position to en- 5 its position for ff cting the shift of the esgage the next tooth, thus permitting the carcapement. Fig. 4 is a perspective view of riage and the supplemental portion, G, and the shift-device, detached from the machine, the bar, H, to he moved endwise by the usual but indicated as in its operative relation to spring drum the distance of one of theratchet- .a part of the escapement. teeth to letter-space. The said bracket, 0, mo

has a foot-lug which is mounted on a vertical pivot, 0 so that the aforementioned pawldevices, 12, b and (1, may be swung bodily rearward away from engagement with the ratcheted-bar, the torsion springindicated at 0 serving to maintain the pawl-devices of the escapement normally in engagement with the ratcheted bar. All of these escapement devices which have thus been, in detail, referred to, as well as their operation, are fully set forth in the aforesaid Letters Patent to which reference may be had, if found desirable, to a more full understanding of this description of escapement.

Now, proceeding to describe the improved escapement shift device the same will be seen, by reference to the drawings, to consist of a light strip or bar, J,which is pivotally mounted on the part, G, of the carriage, the same being extended longitudinally in a line which is slightly above the ratchet-bar and an intermediate portion of this bar, J, which is adjacent the inner working extremity of one of the aforesaid pawls, is adapted to be swung thereagainst to force the pawl-devices rearwardly as the latter are readily permitted by the manner of their pivotal support on the part, 0 The said bar, J, is extended longitudinally at one end slightly beyond the corresponding end of the carriage, B, where it is provided with the forwardly and angularly extended arm,f, which, in its forward extension, has enough of elevation above the rearsupport rail, D, to permit its depression without interference by said rail or the lug of the machine frame on which the said rail is supported; on the other hand this arm has a comparatively compact arrangement relative to said support-rail, D, and the end of the carriage, and the carriage rotating knob, 9, so as not to be an inconvenience to, or be unfavorably affected by, said parts in the usual operations or manipulations, respectively thereof.

As will be perceived, especially on reference to Fig. 4, the entire shift device is of a most simple, light, and inexpensive construction, and also, as incidental thereto amply durable. Setting forth the precise construction in detail of this device, as shown, it consists of the light-bar, J, two light, perforated ear-pieces, h, h, having suitable angularlugs, 72 whereby to rivet to the said bar, J,- and the arm, f, which also has the angle-lug, 71 whereby it is also riveted to the bar, J.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a typewriting machine, in combination, the carriage having the horizontal ratcheted-bar, H, the bracket mounted for a rearward swinging movement, and a pawl-ended arm mounted on the bracket for a vertical swinging movement, and a pawl having a longitudinally reciprocating movement on the said arm, the bar, J, pivoted to the carriage for a rearward and forward swinging movement against and from said pawl device, and the forwardly extended arm, f, for swinging the said bar, substantially as and for the purposes set forth.

2. In a typewriting machine, in combination, a rear part or appliance for the carriage having the ratcheted bar, H, the bracket mounted for a rearward swinging movement, and a pawl-endedarm mounted on the bracket for a vertical swinging movement, and a pawl having a longitudinally reciprocating movement on the said arm, the bar, J,with the ear pieces, h, h, pivoted to the aforesaid part of the carriage, and the arm, f, with the lug whereby it is riveted to said bar, J, substantially as and for the purposes set forth.

MORTIMER G. MERRITT. Witnesses:

WM. S. BELLOWS, K. I. OLEMoNs.

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