US2249627A - Mechanism for hot stamping - Google Patents

Description

July 15, 1941.

A. DRUCKER ET'AL, 2,249,627 MECHANISM FOR HOT STAMPING Filed June 5, 1940 2 Sheets-Slfeet 1 29 14 L 15 16 29' I ABRAHAMDRUCKER PATSY LAFENNA INVENTORS ATTORNEY.

J y 15, 9 A. DRUCKER ET AL 2,249,627

MECHANISM FOR HOT STAMPING Filed June 5, 1940 2 Sheets-Sheet 2 35 16 17 ABRAHAM DRUCKER PATSY A PENNA INVENTORS A TTORNE Y.

Patented July 15, 1941 Abraham Drueker, New York, and Patsy La 'Penna, Brooklyn, N. Y.; said La Penna assign'or to said Drucker 1 Application June 5, 1940, Serial No. 338,882

2 Claims.

This invention relates to a selective numbering mechanism to stamp, imprint or emboss indicia upon articles such as leather, paper, and the like, by means of heated impressions.

An object of this invention is to provide a hollow spindle mounted in the forked arms of a bifurcated housing and having an electric heating element mounted in the hollow spindle for suitably heating the spindle while the housing is moved up and down for operating purposes.

Another object of this invention is to provide a plurality of number stamping disks rotatably mounted on the spindle, one side of each of said disks having an annularly shaped and peripherally recessed side extension serving to receive a spring to engage and hold the disk against accidental rotation.

Another object of this invention is to provide a crank pivotally mounted at one end of the housing and having an elongated spindle rotatably mounted at the free end thereof and the spindle having a number disk setting gear secured thereto and being jointly movable into engagement with the gear teeth on the stamping disks for selectively rotating said disks, and the crank being adapted to be turned radially away from the housing to permit movement of the set ting gear into engagement with the gear teeth on one of the disks while out of contact with the heated housing.

Another object of this invention is to provide sight means positioned exteriorly of the number stamping disks and substantially in a horizontal plane above the disks, to provide a quick numbering index in front of the operator and so that the setting up and resetting of the indicia to be stamped can be accomplished in the. least possible time. 3

With the above and other objects in view, the invention will be hereinafter more particularly described, and the combination and arrangemen-t of parts will be shown in the accompanying drawings and pointed out in the claims which form part of this specification.

Reference will now be had to the drawings, wherein like numerals of reference designate corresponding parts throughout the several views, in which:

Figure 1 is a side elevation of a selective numbering mechanism which embodies the invention.

Figure 2 is an end view of the numbering mechanism, partly broken away.

Figure 3 is a plan view of one of the number stamping disks, in integral relation with a gear.

Figure 4 is a top plan view of the numbering mechanism.

Figure 5 is a cross-sectional View of the numbering mechanism, the'section being taken as on line" 55 in Figure 2, the heating unit being removed.

In the illustrated embodiment of the invention the numeral [0 indicates aselective numbering mechanism comprising a bifurcated housing H having a cylindrical upper extension l2. The fingers [3 of the ifurcated housing I l have apertures 14'. A hollow spindle l5 has been mounted in the apertures It. A plurality of annular number stamping disks it have been r0- tatably mounted on the spindle l5. Eachdisk has an integral annular side extension H. The peripheral surface of each side extension H has been formed into gear teeth Hi.

Each disk It has a plurality of marginal slots [9 forming radially extending studs 2i], each of which has been engraved to represent a digit.

The gear teeth I8 have been positioned in alignment with the studs 20.

Elongated wire springs 2! have been secured to the rear of the housing H by being clamped by a 'bar 22 to the housing. The springs El depend vertically from the bar 22 and are aligned with the side extensions ii. The springs 2| have angularly shaped lower extensions 23 facing the sideextensions H and are in axial alignment with the side extensions 23.

A crank 24 has been pivotally mounted on a pin 25- positioned in spaced relation above the spindle 15. An elongated spindle 25 has been rotatably mounted at the free end 21 of the crank 24 and has a number disk setting gear 28 secured at one end thereof adjacent the disks. A handle 29 has been secured to the outer end of the spindle 26." The operator may, by using the crank 24, slide the spindle 26 so as to bring the gear"2"8 into mesh with the teeth on the side extensions of any selected disk.

7 Normally, the angular extensionZB of a spring 21- is seated between two teeth of a disk l6 and holds the disk locked against rotation. It will thus be noted that when the gear 28 is rotated, the disk registering with the gear 28 will be rotated until the operator brings one of the slots F9 in said disk into alinement with the extension 23. when the spring 2| will move between two teeth and lock the disk against rotation.

For the purpose of this invention, which is to selectively rotate any desired stamping disk 16 so that a desired numeral will face downwardly for impressing purposes, we have duplicated the digits appearing in engraved form on the outer periphery of the studs 29', on the bottom walls 29 of the slots l9. We have positioned the duplicate digits in spaced angular relation, approximately ninety degrees apart. Two sets of numerals from zero to 9, inclusive, are engraved on each disk. The operator may thus tell at a glance, by noting a numeral appearing below a sight bar 32, which digit will be impressed on the leather or paper article lying on the platen of a press in which the selective numbering mechanism H! may be mounted for reciprocatory operating movements. Each disk has a stud 39 undercut so that a blank space may be had between numbers. The numbers zero to nine, inclusive, are engraved in the normally exposed surfaces of the studs, as shown by dot-and-dash lines in Figure 3, that is, the stamping numerals project out from the disks l6.

Mounted inside the hollow spindle I5 is an electric resistance heating unit 33 from which extend electric wires 34 which may be suitably connected to a source of electric current (not shown). An electric current passing through a high resistance wire causes the heating unit 33 to get hot and to heat the spindle l5 and the number stamping elements.

A set of numbered disks l6 have been mounted adjacent the right hand finger I3 and. a set of numbered disks I6 have been mounted adjacent the left hand finger l3. Intermediate the said sets of disks has been mounted an elongated annular member 35 preferably of hexagonal crosssection. On one or more of the hexagonal faces may be formed indicia indicating the name of a concern, etc. It is thus possible to selectively adjust the various disks l5 and the central hexagonal member 35 to provide indicia which reads successively,

JOHN DOE 22 2032 consisting of a set of numerals, a name plate and another set of numerals. There is thus provided a set of numerals on each side of the name plate. The indicia shown is merely illustrative.

As shown in the drawings it will be noted that the sight bar 32 extends all the way across the housing H and is positioned parallel with the spindle l5. The lower face of the sight bar is in alinement with the two sets of numerals on opposite sides of the name plate member 35 and serves to indicate at a glance whether all the said numerals are properly set.

The hexagonal shape of the intermediate member 35 provides difierent peripheral spacing from the spacing of the studs 20 of the number disks 16. As shown in Figure 5, it will be seen that the uncut hexagonal faces are a bar to the axial movement of the setting gear 28 from one set of number disks to another set of number disks. The selective mechanism comprises at least three sets of type wheels or stamping devices each of which is resiliently held by a spring 2|, and a setting member carried on a slidable shaft or spindle 26.

The selective numbering mechanism l0 thus described may have the cylindrical extension I2 secured in an aperture in the reciprocating plunger of a stamping press (not shown). The stamping press has a platen and may be actuated by a foot lever for causing reciprocatory movements of the plunger and the attached numbering mechanism to and from the platen.

It is to be noted that the mechanism herein described makes it possible to. actuate any one of the stamping disks irrespective of the fact that the disks have been made so hot as to be untouchable by the hand of the operator. The setting gear 28 and the spindle 26 and handle 29 being removed to a position away from the periphery of the stamping disks and being thereby substantially fully exposed to the cooling air, makes it possible for the operator to grasp the cool handle without feeling any undue effects of heat generated by the heating unit 33. It is also to be noted that the handle is made of a heat resisting material such as Bakelite or fiber.

We claim:

1. In a mechanism for hot stamping, the com bination with a housing, a hollow spindle carried by said housing, said mechanism comprising at least two sets of toothed number stamping disks and a non-toothed annular intermediate name plate stamping member rotatably mounted on said spindle, each of said stamping disks having a sideways extension comprising gear teeth in alignment with said number members, springs intermediate said number disks, each of said springs being fixed to said housing and being in engagement with said gear teeth in said sideways extensions for individually locking said disks to said housing, a crank pivotally mounted on said housing, an elongated spindle rotatably mounted at the free end of said crank and having a disk setting gear secured thereto, said spindle and said setting gear being movable into engagement with said gear teeth, whereby said number stamping disks may be selectively engaged by said setting gear to cause rotation thereof by rotating said setting gear, said pivotally mounted setting gear being movable generally radially into a position clear of said name plate member to permit axial movement of said spindle for bringing said setting gear past said name plate member and then movement generally radially into engagement with the teeth of said disks on the opposite side of said non-toothed name plate member, all of said stamping devices being individually resiliently held during said movements.

2. In a mechanism for hot stamping, the combination with a housing having a spindle and two sets of toothed number stamping disks and a non-toothed annular intermediate name plate member rotatably mounted on said spindle, each of said disks having coaxially disposed gear teeth means at one side thereof, springs in engagement with said gear teeth means holding each of said stamping disks in operative position, an arm pivoted to said head and having a spindle slidably and rotatably mounted at its free end, said spindle having a setting gear secured at one end thereof, said arm being adapted to be swung away from said head and thereby moving said setting gear generally radially outwardly to a position clear of said name plate member to permit axial movement of said spindle for bringing said setting gear past said name plate member and then movement generally radially and inwardly into engagement with the gear teeth means of said disks on the opposite side of said name plate member, each of said disks having one set of numerals facing downwardly for impressing and having another set of numerals facing upwardly for indicating to the operator the character of said downwardly facing numerals.

ABRAHAM DRUCKER. i PATSY LA PENNA.

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