US1461670A - Device for inserting map tacks - Google Patents

Description

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W. P. MILLS DEVICE FOR INSERTING MAP TACKS I Filed Jan. 5. 1922 INVENTOR.

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Patented July 10, 1923..

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Application. filefiiJ'anuary 3,- 1922. SeriaYNo. 526,829.

To all whom it may concern:

Be it known that .I, "VILLIAM PERCY Mints, a citizen of theUnited States, and a resident of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented an Improvement in Devices for Inserting Map Tacks, of which the following is a specification.

The insertion or placing of map tacks, push pins and the like in maps, data indicating diagrams, and other objects to indicate graphically thereon certain information has come to be a very general practice. These tacks and pins are usually inserted by hand; that is, by grasping the heads thereof between the thumb and finger and inserting them by pressure. This is not entirely satisfactory for two reasons :first, if there are many pins to insert the fingers become sore, and secondly, it is difficult to place them as close together upon the map or other object as may be desirable or necessary.

It is the object of my invention to provide a device for clamping and holding the heads of these tacks and pins for the purpose of inserting the points thereof into the map or other object. I

A further object of the invention is to pro vide a device of this character which shall be small and light and which may be cheaply manufactured.

Other objects and advantages of the invention will be pointed out in the detailed description thereof which follows or will be apparent from such description.

In order that the invention may be readily understood reference may be had to the accompanying drawing forming a part of this specification and in which Fig. 1 is a perspective view of a device embodying the invention;

Fig. 2 is a view partly in edge elevation and partly in section thereof;

Fig. 3 is a transverse sectional view taken on the line 3-3 of Fig. 2; and

F ig. 4 is a view showing a portion of the device in side elevation with a pin projecting at right angles thereto instead of lengthwise thereof as shown in Fig. 2.

Referring to the drawing: 1 designates the opposite sides of the device consisting of a single strip of spring metal which sides are in general parallel relation with respect to each'other and are connectedby the interined'ia'teljeri't portion 2 at the upper or handle endo'f the device. The opposite sides 1 are each provided with semi-circular head portions 4 the hollow sides of the said portions facing each other, as is clearly shown. These head portions 4 are complementary with respect to each other and when pressed into contact form a substantially spherical figure. At their extreme lower edges or sides the semi-spherical head portions 4 are notched, as indicated at 5. The said semispherical portions are also provided with notches or projections at the opposite sides, as indicated at 6.

In the use of the device the spherical shaped head portions 4 are clamped about the head 7 of a pin or tack the point portion of which is indicated at 8. In Fig. 2 the pointed pin portion projects through the opening formed by the complementary notches 5, whereas in Fig. 4 the pin portion 8 projects through the opening formed by two of the complementary notches or depressions 6.

Although in the construction shown the clamping portions 4 are of semi-spherical outline it will be understood that the shape of these clamping portions may be changed so as to correspond with the shape of the heads of the pins which it is desired to handle. In other words, if the heads of the pins or tacks are of oval shape or if they should be of any other shape the clamping portions 4 should be changed to correspond therewith. The principle of operation is the same in any case.

It will be seen that I have provided a de vice by means of which-pins 0r tacks may be readily clamped and held for insertion into a map or other object, and furthermore that the said device is adapted for readily placing the pins in closer relation with respect to each other than may be readily done when the pins are held in and by the hands of the person inserting the same. It will also be noted that the device provides for holding the pins either in longitudinal relation with respect, to the length thereof or in substantially right angular relation with respect to its length. This arrangement is provided because it may be found that in certain cases it is desirable to hold the pin Having thus described my invention, What" I'claim and desire to secure by Letters Patent is:

A device for inserting'headed map tacks, which consists of a strip of suitable spring metal of prong shape the opposite sides of which terminate in hollow semi-spherical outwardly projecting portions adapted to receive the heads of the map tacks, the inner edges ofsaid semi spherical portions being provided on their lower edges with complementary "notches adapted toreceive the shanks of the map tacks and the inner edges of said semi-spherical portions being also provided at their opposite side edges with complementary notches adapted ;.to a receive 7 the shanks of the map tacks.

' In testimony that I claim the foregoing as my invention, I have hereunto subscribed my name this 30th day of December, A. D 1921. p

WILLIAM. PERCY MILLS:

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