US227299A - Chaeles a - Google Patents

Description

O. A. RANDALL. Perf0r-ating-$tamp.

Patented May-4, 1880-.

(No Model.)

I 7 (Marks .71 Randall -P ERS. PKOTO-LJYNOGRAPIIER, wAsMlNu'mN D c h c r iviimi EMI 1, i

CHARLES A. RANDALL, OF NEW YORK, N.

PERFORATlNG-STAM P.

SPECIFICATION forming part. of Letters Patent No. 227,299, dated May 4, 1880.

Application filed March 20, \880. (No model.)

i a side elevation of an embossing hand-stamp constructed according to my invention Fig. 2 is a vertical section of the same. Fig. 3 is an elevation, illustrating the action of the le- To all whom it on 4} concern:

Be it known that I, CHARLES A. RANDALL, a citizen of the United States, residing at New York, in the county of New York and State of 5 New York, have invented new and useful Imyer and trip-dog. Fig. 4.- is a view, partly in provements in Embossing Hand Stamps, of section, of a modification oi the apparatus. which the following is a specification. The letter A indicates the stationary or bed die, secured to a suitable base, 13, from which rises a curved standard, 0, carrying rigidly at its upper end a vertical barrel, D.

The movable die E is fixed to a stem, 0, which extends upward into the open lower end of barrel D, and against the upper end of the stem 0 bears a strong spiral spring, F, which is inclosed by the barrel D, and the of which bears against an annular flange or shoulder, f, projecting from the inner surface of said barrel.

A stud, G, projects from the stem 0 through a slot, it, formed in the barrel D, and under this stud takes the end of a sliding dog, 1, carried by the hand-lever J, which is fulcrumed to the curved standard 6.

The fulcrum-pin j of the hand-lever passes through a slot, at, at about the middle of the dog, and a pin,j, projecting from said lever, passes through another slot, i, in the outer portion of said dog, these slots being of such length as to permit the dog to slide rearwardly to escape or clear the stud Gr, and forward to take under said stud, as shown in Fig. 1.

When the long arm or handle of the lever J is depressed the dog forces the stem 0 upward, compressing the spring F until, in the are of its movement, said dog leaves the stud, as shown in Fig. 8, and the spring, being thus released, drives the stem 6 and the inovablr die forcibly downward upon the bed-die A giving a quick percussive blow upon the ma terial which is placed upon said bed-die to b embossed. At the moment the dog I in it upward movement escapes the stud G sai dog is caused by gravity to slide rearwardl; to the position shown in dotted lines, Fig. 2 so that it will clear the stud in a downwar movement, and when the lever is then raise to the position shown in dotted lines, Fig. 1 the dog slides forward, so as to again take u: der the stud ready for operating the die.

In order thatthe upper die may be prompt retracted from the bed-die, a rod, K, providi This invention relates to that class of Bill bossing hand stamps which are adapted mainly for use in offices and counting-houses for roughening the surfaces of monetary papers where numbers and amounts are written, in order to prevent alteration or raising.

Embossing hand stamps have heretofore been of two kinds, in one of which the movable die is operated by percussion for embossing, and retracted by a spring, the percussion being produced by a blow from the hand upon a head formed upon the stem carrying the die. Such stamps are quite rapid and effective, but their use. is objectionable on account of the required blow by the hand, which becomes very painful if repeated often at short intervals. In the other kind of stamp referred to the movable die is impelled for pressure by a camlever, the pressure upon the material to be embossed being gradual instead of percussive. While in such a press the disagreeable blow by the hand is not required and great power is obtained, it is not so rapid in action, and does not produce the clear, sharp, well-defined impression upon the material which is effected by the (Auick strike and retraction of the percussive It is the object of my invention to combine in an embossing hand stamp the desirable qualities of the two kinds of stamp above referred to, while discarding or obviating the objectionable features of both; and to this end it consists, mainly, in a hand-stamp so constructed that the movable die is operated for embossing by the force of a spring which is first placed under tension by means of a lever, and suddenly tripped or released to exert its resilient action upon said (lie, giving it a percussive action upon the material and stationary die. Thus the lever is the only part operated by hand, while at the same time are secured the efficiency and rapidity of percus- 50 sive action.

In the accompanying drawin Figure 1 is upper end with ahead, 70, extends downward through the upper portion of the barrel D, and is screwed into the upper end of the stem e, its head is resting upon a spiral spring, I. which stands upon the upper surface of the flange or shoulderf in the barrel.

The spring F is of such length that it does not force the upper die against the bed-die, except when under expansive action, the latter part of its stroke being made against the tension of'spring Z, so that when the stroke of said spring F is completed the spring Zimmediately acts against the head 70 to lift the upper die from the material and bed-die.

By-adjusting the length of rod K, by means of its screw-connection with stem 0, the height to which the upper die may be raised can be regulated to correspond to the thickness of the material operated upon.

In the modification shown in Fig. 4 the extra lifting-spring and the sliding dog are dispensed with.

The driving spring F has its lower end firmly secured to the stem 0, and its upper end fixed at the top of the barrel, the length of the spring being such that after delivering its stroke under the influence of its recoil after :ompression it will retract sufficiently to raise ;he upper die a predetermined distance from ;he bed-die.

The sliding dog being omitted, the lever J ias its inner arm prolonged to act in lieu of ;aid dog, and the lever is slotted, as at to imbrace its fulcrum-pin and to permit it to :lide forward and rearward to engage or clear he stud G, as desired. The inner end of the ever is beveled, (as is also the end of the dog vhen used,) in order that it may be forced earward should it strike the stud ein moving .ownward.

I am aware that a continuously-operative 1. In an embossing hand-stamp, the combination, with the bed-die, the movable die, and a fixed guide for confining said movable die to rectilinear motion, of a spring acting upon the movable die, a hand-lever for moving said movable die from the bed-die against the tension of the spring, and means for disconnecting said hand-lever from and connecting it with the said movable die, substantially as described.

2. The combination, with the movable die having stem 6, provided with stud G, of the barrel D, slotted to embrace said stud, a lever for bearing against stud and moving stem e inwardly of the barrel, the spring F, bearing upon said stem 6, said stem and provided with head 7c, and the spring Z, supporting said head, substantially as and for the purpose set forth.

3. The combination, with the movable die having stem 0, provided with stud G, of the slotted supportingbarrel, the lever J, and the freely-sliding dog carried by said lever, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

CHARLES A. RANDALL. Witnesses:

CHARLES G. 00E, HARRY S. GOODRIDGE.

the rod K, engaging with

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