US732840A - Type-writing machine. - Google Patents

Description

, PATENTED JULY 7., 1903;4

M. S.BYLAR. TYPE WRITING MACHINE. l.APPLICATION FILED FEB'. 18, 1903.

2 sums-SHEET a.

' N0 MODEL.

A TTOHE Y i UNITED STATES" PATENT Patented July 7, 1903.

OFFICE.

MATTHE Enna-jor NEW YORK, N. Y., AssieNoR To ELLroTraHATcH soon` TvrEwRiTEE-ooMPANY, A ooEPoRATioN oF NEW YORK.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent N ou 732,840, dated July 7, 1903. Application tied Febuary 1a, 190s. serial No. 143,560. (No model.)

.To all whom, t may concern.-

Be it known thatLMATTHEw S. EYLAE, of New York city,"county of New York, and

`State of New York, have invented a new and useful Improvement in Type-Writing Machines, of which the following is a specication. Y

My inventionhas reference more particu- Y. larly to type-writing machines wherein a flat platen is employed to `sustain the paper beneath an overlying writing mechanism ar ranged to print in a downward direction thereon and to shift horizontally for letter and line spacing--such, for example, as theElliott da Hatch machine of commerce, represented as Yto its general organization in Letters Patentof the United States N o. 620,125. It is desirable to adapt these machines to fprint two alphabets of capital letters, one havin ga large or broad faceV and the other a smaller or narrower face. When these two faces are used in the one ma`chine,"it is desirable to have a feed mechanism which may be instantly adj usted to feed the carriage or printing mechanism forward uniformly step by step the 'distance requiredfcr the wide letters r uniforinly step `by step for a smaller distance suitable to the narrow letters. i

To this end I-combine with the letter-feed f 3 mechanism in a machine having an alphabet "of wide characters and 'a second alphabet of narrow character devices which may beinv stantly throwninto or out of action'to control the distance `which thecarriage advances between the printing ofone letter and the next. In all parts exceptthe feed mechanism the machine may be of ordinary construction.

In the drawings, I have represented my improvement as applied to an Elliott da Hatch machine, the drawings being limited to the .feed mechanism-and adjacent parts necessary to an understanding ofI its action.

Figurelisaperspective view of therear part of a Inachinewith my improved feed devices applied'thereto. Figs. 2 and 3 are i rear elevations of the feed-dogs, feed-wheel, I `and adjacent parts; and Fig. 4 is a vertical cross-section through said parts on the correfigures.

tion by rocking the head through the large type.

i bar G.

spondingly-numbered line of the preceding Fig. 5 is a diagrammatic view showing the relative spacin g of the large and small capital letters.

` Referring jto the drawings, A represents the traveling frame or carriage of the machine in which the series of type-bars B are mounted on pivots at their lower ends and connected with finger-keys, as usual, whereby they are caused to swing downward and print on the underlying sheet of paper.` There Awill be the usual series of these type-bars arranged in a circle to strike at a common central point, and each bar will be provided at the upper end with the usual rocking head C, carrying two type D and D', one or the other of which may be brought into the printing posiusual devices provided for the purpose. One of the letters of the type B is of large size, with a broad face, while the other, having the same character or letter of a dierent series or font, has a smaller and narrower face.' Both alphabets will be composed of capital letters. In using the machine, matter will be `printed at one time entirely from the small type and at another time entirely from the After each printing action the carriageshould advance laterally a distance corresponding to the'width of the type in action. This variable feed of the frame is eiected as follows: The carriage, suitably supported and guided on rollers, is urged constantly to the left by the usual spring 4connections.' Its advance is controlled by the toothed rack F on the horizontal iixed guide- This rack is engaged by a pinionH, having its horizontal shaft mounted in the carriage and provided with a toothed escapement-wheel I. This wheel is controlled in its rotation by the two alternately-acting `dogs J and K, carried by the rocker-frame L, mounted to vibrate at rightangles to the direction in which the carriage advances. The dog J is fixed to the rocker-frame. The dog K is pivoted at 7c to the rocker-frame, so that its upper end which engages the wheel may vibrate in the direction in which the frame travels. It isacted upon at thelower end by spring k', which tends to throw the upper end forward out of line with the other dog and ahead of the same in the direction in which the machine advances. Thev escapementwheel has a tendency to rotate in the direction indicated by the arrow.

In the normal condition of the parts the dog K is in engagement and is held back by the pressure-wheel somewhat in advance of the fixed dog J, as shown in Fig. 2. When the rocker-frame is actuated by the operation of a finger-key or the space-key, it swings backward, carrying the upper end of the dog K rearward out of engagement with the escapement-wheel I and at the same time bringing the dog J into the path of the wheel to arrestitsrotation. ThedogKwhenreleased, as stated, is thrown forward by the action of the spring 7a', as indicated by dotted lines in Fig. 2, so that when the two dogs are swung forward ed gewise by the rocker-frame the dog J will disengage from and release the escapement-wheel, which will turn forward with the pinion and permit the carriage to advance the space of one letter. The advance is arrested by the dog K, which during the forward motion of the rocker and the disengagement and retreat of dog J is carried in its advanced position into the path of the escapement-wheel, so that the next tooth on the latter acting on the dog K will carry the latter to the right around its pivot 7c until its upper end is arrested by contact with the shoulder on the rocker in its original position, the dog thus stopped in its vibration serving in turn to stop the wheel.

The foregoing action of the parts is similar to thatof the feed-dogsin the ordinaryElliott it Hatch machine. The distance which the carriage is permitted to move by each engagement and disengagement of the dogs depends on the distance which the dog K turns forward around its pivot ,k before engaging the wheel. In Fig. 1 it is represented as swinging forward the distance of one tooth only, so

lthat the escapement-wheel turns one tooth only, allowing the carriage to advance the width of one of the narrow type. If, however, the dog K is allowed to swing forward,

as shown in Fig. 3, the distance of two teeth,

or, in other words, given a greater vibration, it will advance the distance of two teeth on the wheel and allow the wheel to turn the distance of two teeth, the carriagey being permitted to advance twice as fast as in the first instance a distance corresponding to the width of the wide type. In other words, the advance of the carriage after each printing action is greater or less, according to the distance which the dog K is permitted to swing ahead before rengaging the escapementwheel. In order to control this action, I combine with the dog K an adjustable stop device under the control of the operator. I return the upper end of the spring lc above the lower end of the dog K to serve as a stop therefor to check its vibration, as shown' in Figs. 2 and 3. This end of the spring is extended throughl a plate M, mounted to vibrate vertically around a pivot-piu N on the yoke under the control of a rod O, connected at the upper end to a lever P, which is pivoted atp on the carriage and extended at its forward end within convenient reach of the operator and past a dog or a latch Q, by which it may be locked down at will. When this lever is depressed and fastened down, it holds the plate M in its uppermost position, permitting the end of the spring or stop 7c' to stand in its uppermost position, as indicated in Fig. 3. The effect of this is to permit the extreme vibration of the dog Kv and the corresponding extreme feed of the carriage. When the lever P is released, the plate M is pulled down by the action of the spring 7c and the upper end of the spring depressed, as shown in Fig. 2, so that it serves to limit the vibration of the dog K, and thus cause the short feed of the carriage.

It will be observed that the upper end of the spring is,in fact,sin1ply an adjustable stop to control the vibration of dog K, and it will be manifest to the skilled mechanic that this stop may be made in any other suitable form and arranged in any suitable manner, provided only it is adapted to vary the extent of the vibration of the dog K and to be secured in position so that the feed of the carriage will be uniformly and constantly wide or narrow, according as the larger or smaller faces are called into use.

In operatingthe machine if the large type l are required the type-shifting devices are adjusted to so control the position of the typehead C that the large type only will print. At the same time the leverP is locked down, thus causing the dog K to receive the maximum movement, so that the carriage will advance after each printing action a space appropriate to the width of the large type. When, on the other hand, the small type alone are to be used, the lever P is released and the stop permitted to fall, so as to limit the movement of dog K, whereupon the machine will feed after the writing of each sm all type a correspondingly short distance.

It is to be noted that my invention does not relate merely to a feed mechanism having a variable action, but that it consists in an organized machine carrying two distinct alphabets or fonts of type, each adapted to be used independently of the other, so thatl the writing may be effected wholly in one face or the other, the machine being adapted to space uniformly and constantly for all the faces in each alphabet a distance appropriate to the alphabet which is at the timein use.

What I claim as my invention is- 1. A type-writer for producing two distinct classes of print, comprising in combination an alphabet of wide characters and a distinct IOO TIO

alphabet of narrow characters, each usable whereby a uniform and narrow feed is efindependentlyof theother, andaleiter-feed fected when the narrow alphabet is in use,

mechanism, adjustable to give a uniform and and a uniform and wide feed effected when 15 narrow feed or a uniform and wide feed, acthe wide alphabet is in use.`

` 5 cording as one alphabet or the other is in use. In vtestimony whereof I hereunto set my 2. In a type-writing machine, a series of hand, this 13th day of Eebruary, 1903, in the type-bars with rocking heads, an alphabet of presence of two attesting Witnesses.

`narrow type and an alphabet of wide type, one

i of each carried by each type-head, a letter- MATTHEW s' EYLAR 1o feed mechanism, means for varying the eX- Witnesses:

tent of the feeding action, and means for lock- A. G. OLNEY,`

ing the parts, substantially as described,` 1 W. L. DENCH.

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