US736477A - Type-writer. - Google Patents

Description

UNrrnn STATES Patented August 1S, 1903.

PATENT @Ferca TYPE-WRITER.

SPECIFICATION forming part of Letters Patent No. 736,477, dated August 18, 1903. Application led lFebruary 4. 1903. Serial No. 141,918. (No model.)

To all whom/'it may concern:

Be it known that I, WILLrAM BAXTER, J r., a citizen ot' the United States, and a resident of Jersey City, in the county of Hudson and State of New Jersey, have invented a certain new and useful Improvement in Type- Writers, of which the following is a specification.

My invention relates to a pad employed for arresting the return movement of type-bars in a type-writer and for holding the type-bars in a position to be operated by the key-levers, and especially to that character of pad which for the purpose of preventing rebounding of the ty pe-bars is constructed with the inherent qualities of yielding and non-resiliency in the material of which the pad is constructed. Such a pad is broadly claimed, and one embodiment thereof is illustrated, described, and speciiically claimed in my application filed May 22, 1902, Serial No. 108,245. As pointed out in that application, much inconvenience and reduction in efficiency have been experienced in type-writers resulting from the rebounding action of the type-bars and consequent interference between adjacent barswhen successively called into play. As also explained in the application aforesaid, this rebounding action is due to resiliency or elasticity in the arresting-pad generally employed and in the type-bar, together with its controlling connections,'and may be overcome by providing means to absorb the energy given out by the return stroke of the typebar instead of storing up such energy and giving it back into the type-bar, to accomplish which purpose I provide an arrestingpad having the inherent qualities of yielding and non-resiliency, as broadly claimed in said application and as also described and speciflcally claimed therein, embodying in its specific construction a suitable sheath with a filling of finely-divided material, preferably in spherical 0r substantially spherical formfor example, very line shot-and adapted to yield underthe impact of the type-bar by displacement of the particles constituting such filling. My application aforesaid described the additional feature of having the sheath containing the finely-divided material divided up by suitable partitions into compartments, which compartments are so disposed as to resist undue shifting either in the direction of gravitation or in the direction of the displacement due to the yielding of the lilling under the impact of the type-bar.

My present invention relates specifically to improvements in pads embodying the broad principles and features of construction above stated and will now be fully described in connection with the accompanying drawings, in which- Figure l is a sectional detail view of the type-back pad and of the printing-roll and a side elevation of a type-bar with its controlling key-lever and connections in a well known type of machine to which my present invention is applied by Way of illustration. Fig. 2 is a perspective view of one embodiment of a yielding non-resilient padthe construction of which is within the purview of my present invention, the end of the pad being in section and a portion of the outer sheath being removed. Fig. 3 is a perspective view of a section of a similar pad having a somewhat-different specific construction.

Referring to Fig. 1, l represents the printing-roll, 2 the type-bar,which is fulcrumed at 3, and 4. a key-lever which is assumed to be fulcrumed at a point outside the field of Fig. l and connected at 5 with an intermediate lever 6, that has controlling connection at 7 with the type-bar. 8 represents the arresting-pad, upon which the type-bars strike in their return movement and by which the bars are arrested and held in position of rest unt-il they are called into play. The construction of this pad S, whereby I am enabled to obtain a yielding non-resilient pad, constitutes the subject of my present invention. According to one feature of my present invention the pad 8 is divided up by longitudinal partitions, divisions, or planes of separation into a series of longitudinal, laterallyjuxtaposed, and parallel rolls 9 or ribs or ridges 9, shown With lillings of granular or iinely-divided material-oc, upon which the type-bars 2 rest transversely. Fromso dividing up the pad having the inherent qualities of yielding and non-resiliency, a number of advantages result, some of which are not dependent upon the construction of pad having a filling of finely-divided materialfor instance, the dividing up of the pad in the IOO . siliency are obtained by the use of a finelydivided material in the pad, in addition to these advantages maybe mentioned the close confinement of the material of the pad in a direction transverse to the pad, the presentation of a reduced surface of impact to the type-bar, while still affording support to substantially the entire head of the bar, the improved work or energy-absorbing effect of the pad, when the separate rolls are used, and

the impairment and necessity for replacement of onlyafraction of the pad should one of the rolls become injured. The broad idea of so dividing up the contact-surface of the pad is described and claimed in my previous application, Serial No. 108,245, and a specific form or embodiment of this idea-namely, the diagonal arrangement of the fluting or surface lines-is also therein claimed. The distinction of my present invention resides, primarily, in the longitudinal arrangement of the iiuting or surface lines, which, while described, is not specifically claimed in my earlier application aforesaid and which involves the advantages of producing a better and more easily constructed pad and permitting the use of the separate rolls filled with finely-divided material. Another feature of my present invention consists in separately dividing each of these longitudinal rolls 9, ribs, or ridges 9a by transverse divisions, partitions, or the like 10 to confine the lilling material against undue displacementlongitudinally of the pad and in the direction of gravitation; also, in locating these transverse partitions, &c., 10 at such points in the respective rolls that the transverse partitions in one roll will not come in the same transverse line with the partition in any other roll inthe pad. In other words, the divisions 10 in the dierent rolls are arranged in breakjoint relations, and a type-bar happening to strike over a joint in one roll will find ample support in the remaining rolls of the pad to avoid displacement of the bar.

In producing the form shown in Fig. 2'the longitudinal division in the pad may be formed by stitching opposite faces of a continuous sheath through and through and drawing them together, so as to produce a series of substantially cylindrical bodies, while according to Fig. 3 the rolls, ridges, or the like are formed by stitching one face of the sheath, preferably the upper or outerv face,

in use down toa flat or plane rear or under face; but the precise model lof Aproducing this effect is not material to the invention, as it is obvious that the sheaths of the desired form could be constructed of any suitable fabric, or they may be woven or knitted in the shape disclosed, singly orin series, and the compartments thereafter filled.

The rolls or longitudinal sections of the pad, especially when made in separate members, are preferably inclosed in an outer sheath 1l, of some suitable material not thick enough to detract by its own resiliency from the absorbing quality of the pad, which outer sheath 11 may be conveniently closed around the inner members of the pad by a seam 12, which in the type of machine illustrated in Fig. 1, as Well as in some other machines, affords a very convenient means for securing the pad in place by clamping the seam 12 between the segmental bars 13 14.

Having thus described the invention, the following is what I claim as new therein:

1. A type-writer pad having the inherent qualities of yieldingness and non-resiliency, and constructed in fluted form, with the lines of the fluting running longitudinally of the pad, so that in use each type-bar rests across a plurality of the flutings.

2. A type-writer pad divided along longitudinal lines into a plurality of longitudinally-disposed rolls, each of which has inherent qualities of yieldingness and non-resiliency.

3. A yielding and non-resilient type-writer pad constructed in fluted form, with the lines of fluting running longitudinally of the and having a covering-sheath.

4. A type-writer pad divided intoa plurality of longitudinal compartments, each of which has a lling of finely-divided material, producing a yielding and non-resilient structure.

5. A type-Writer pad constructed with a plurality of longitudinal compartments, each having a lilling of inelydivided material, producing in the pad the qualities of yieldingness and non-resiliency, and the longitudinal compartments being divided up transversely.

6. A type-Writer pad constructed with a plurality of longitudinal compartments, each having a filling of finely-divided material, producing in the pad the qualities of yieldingness and non-resiliency, and the longitudinal compartments being divided up transp versely, with the transverse divisions located to break joints.

7. A type-writer pad constructed of a plurality of separate rolls, producing a fluted or ribbed structure, each of which rolls has a filling of finely-divided material, and is divided at intervals transversely to prevent displacement of the finely-divided material.

8. A type-writer padconstructed of a plurality of separate rolls, producing a iuted or ribbed structure, each of which rolls has a pad IOO

IIO

filling of nely-divided material, and is divided at intervals transversely to prevent displacement ofthe finely-divided material, and a sheath covering all of said rolls.

9. Atype-Writer pad constructed of a plurality of separate rolls, producing a tinted or ribbed structure, each of which rolls has a filling of finely-divided material, and is divided at intervals transversely to prevent displacement of the finely-divided material, and a sheath covering all of said rolls, formed with a projecting attaching-seam.

10. In a type-Writer, in combination with the type-bars, an arresting-pad having the inherent qualities of yieldingness and nonresiliency, constructed in fluted form, with the lines of the uting running transversely to the type-bars.

l1. In a type-writer, in combination with the type-bars, a yielding and non-resilient 2o pad extending transversely to the type-bars, and constructed in fluted form, the lines of the nting running longitudinally of the pad and transversely to the type-bars.

The foregoing specification signed this 31st 25

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