US 1188429 A
Description (OCR text may contain errors)
CHECK 0R TICKET PUNCH.
APPLICATION FILED SEPT-'14, 1915.
1,188,429. Patented June 27,1916.
TH]: coLuMmA Pmrmurunm 30.. WASHINGTON, B. c.
5 of Massachusetts,
FRED FARROW, F BOSTON, MASSACHUSETTS.
CHECK 0B TICKET PUNCH.
Specification of Letters Patent.
Patented June 27, 1916.
Application filed September 14, 1915. Serial No. 50,607.
To all whom it may concern Be it known that I, FRED Fnnnow, a citizen of the United States, and resident of Boston, in the county of Suffolk and State have invented certain new and useful Improvements in Check or Ticket Punches, of which the following is a specification.
This especially to invention relates 16 punches used in restaurants for punching holes in customers checks to indicate the amount owed by the customer, and it has for its object to provide a simple and durable punch adapted to be easily and conveniently manipulated in the performance of its function.
The invention consists in the improvements which I will now proceed to describe and claim. 1 Of the accompanying drawings forming a part of this specification: Figure 1 represents a perspective view of a punch embodying my invention; Fig. 2 represents a longitudinal section of the same. Fig. 3 represents an enlarged side view of a portion of the plunger hereinafter referred to.
Fig. t represents an enlarged end view of the plunger.
The same reference characters represent the same or simllar parts in all the views.
In the drawings, 12 represents a straight tubular barrel, the bore of which is con-- tracted at its outer end portion to form a guide 113 and an abutment for one end of a spring 1a. The opposite end portion of the barrel is provided with a handle 15, which preferably projects from one side only of the barrel, as shown.
16 represents a plunger having a close sliding fit in the guide 13 and extending through the barrel, the inner end of the plunger projecting from the barrel and being provided with a head 17; The outer end of the plunger constitutes a male cutting die 18, which is formed by notching said outer end as shown by Figs. 1 and 2. The notch has two oppositely inclined flat faces 18 and 18 which meet to form an obtuse angle 18.
0 section of its outer margin with the periphery of the plunger forms a semicircular cutting edge which is inclined relatively to the longitudinal axis of the plunger. The face 18 is extended forward farther than the face 18 Each face by the inter The plunger is provided within the barrel with an enlargement 19 constituting an abutment for the opposite end of the spring 14, and also constituting a stop member which cooperates with a complemental stop member 20 engaged with the barrel in limiting the backward movement of the plunger by the spring 14:.
The outer end of the barrel is provided with an angular arm 21, which is provided with a female cutting die 22 having an ori: fice 28 in which the cutting die 18 has a close sliding fit, said dies being formed to cooperate in punching a circular blank from a check or ticket 21 inserted in the throat formed by the outer end of the barrel and the inner side of the die 22.
The die 22 .is preferably detachably secured to the arm 21 by a screw 25, so that the die may be readily removed and replaced by another when worn, the arm 21 being provided with an outlet 26 for the blanks punched from checks or tickets.
The plunger is normally held by the spring 14 in the retracted position shown, its cutting die'18 being retracted from the throat and its head 17 projecting from the inner end of the barrel.
The relative arrangement of the handle and the head 17 is such that the hand which manipulates the punch is located mainly at one side of the punch, 2'. 6., the side opposite the mouth of the check-receiving throat, so that a view of said throat is not obstructed by the punch-manipulating hand. The punch is therefore adapted to be convenientlyused, the operator manipulating the punch with one hand and the check or ticket with the other hand.
The removal of the stop screw permits the withdrawal of the plunger in order that it may be sharpened or renewed when worn.
The barrel and plunger are straight, so that the plunger has a rectilinear movement. The orifice 23 of the female die is in alinement with the plunger so that the male and female dies cooperate accurately, and without uneven wear, there being no liability of the male member having a wearing or grinding contact at one side with the female die, as would be the case if the male member moved in a curved path.
support a check 24 with its sides at right angles to the longitudinal axis of the punch. When the punch is projected the two semicircular cutting edges above described act successively to a certain extent, the cutting edge of the face 1S commencing to cut into the check before the cutting edge of the face 18" commences to cut. I find that this successive action of the two cutting edges enables a check to be punched with less muscular efiort than would be required if both edges commenced to cut simultaneously.
am aware that the cylindrical male member of a punch has been provided with a single flat end face inclined relatively tov the axis of the member so that its intersection with one side of the periphery of said member forms an acute angled edge portion. The intersection of said face with the opposite side of the periphery of the male member necessarily form an obtuse angled edge portion which experiences greater resistance in cutting, and requires the application of greater force than the acute angled edge portion.
I am also aware that it has been proposed to form a concave face on the end of a cylindrical male member, said face being so arranged that a continuous or annular acute angled cutting edge is formed by its intersection with the periphery of the member, said edge being in a plane which is inclined relatively to the axis of the male member. Such concave face can only be formed and ground to sharpen the cutting edge by a special tool having a convex face and not capable of being reciprocated crosswise of the axis of the punch member, such special tool being therefore necessarily operated slowly and with considerable difficulty.
The flat faces 18 and 18 -of my improved punch member obviate the objections above recited, each face having an acute angled cutting edge. Said faces can be readily formed and reduced or cut away to sharpen said edges by an ordinary reciprocating file having a flat face or faces, so that the op erations of forming and sharpening said cutting edges may be quickly performed without the use of an appliance especially provided.
Having described my invention, I claim:
1. A check punch comprising a barrel, a spring-retracted plunger movable therein and having a head projecting from the inner end of the barrel whereby the plunger may be projected,-the outer end of the plunger being provided with a notch having two flat faces meeting at an obtuse angle which extends across the center of the plunger, the intersection of said faces with the periphery of the plunger forming two acute angled semicircular cutting edges which are inclined in opposite directions relatively to the axis of the plunger, one of said faces projecting forward farther than the other, whereby one of said cutting edges is caused to enter a check or ticket in advance of the other, and an arm formed on the barrel and provided with a female cutting die separated from the outer end of the barrel by a checkreceiving throat, the check-supporting side of which is at a right angle to the axis of the plunger.
2. A check punch comprising a barrel having a handle projecting from one side of its inner end, a plunger movable in said barrel and having a head projecting from the inner end of the barrel, the outer end of the plunger being formed as a male cutting die, an angular arm formed on the barrel, a female cutting die detachably secured to said arm, and separated from the outer end of the barrel by a check-receiving throat, said arm being provided with a blank outlet coinciding with the orifice of the female die, a spring within the barrel acting to norinally retract the plunger from said throat and project the plunger head from the inner end of the barrel, an enlargement on the plunger within the barrel serving as a spring abutment and as a stop member, and a stop .screw detachably engaged with the barrel and cooperating with said enlargement in limiting the movement of the plunger by the spring, the removal of said top screw permitting the withdrawal of the plunger from the barrel.
In testimony whereof I have aflixed my signature.
Gopies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,
Washington, 20. G.