US2197060A - Glazier's point - Google Patents

Description

April 1940. c. w. SKINNER El AL ,197,060

GLAZIERS POINT Filed Oct. 28, 1938 PatentedApnIG, 1940 GLAZIERS "POINT Gharles We. Skinneu and Edward Raymond Morris, Brockton, J .Mass. aassignors to themselves, do.- .ingrbusinessas Standard Devices Company, a

copartnership a lic tionnotional- 2s, 1938, Serial mazaassa.

' 4 Claims. (cuss-15 .This :invention "relates; i ipointsssuch as are used i'zby'glaziers zfor 1 securing' window panes in position :lpreparatory to .rputtying.

One object "of the :invention is to provide a point which can beset with' great ease and'without othertools than a-putty knife, screwdriver, or the like, and that may be madevery cheaply and with a small" amount of 'm'etal and substantially without waste. i

Thepoint comprises, therefore, essentially a tack having a flatshank and point, I and a head havinga part inalinement with the shank and a part turned outwardly therefrom' and forming with the other partan angular abutment within, which maybe engaged the end of-a tool such as aputty knife, screwdriver, or the like, so that by exerting "pressure on the'tool-thewpointmay be forced into'the-sash and tightagainst the pane being'set.

For a more complete understanding of this invention, reference may be had to the accompanying drawing in which- Figure 1 is a perspective view of a flat shank tack from which the point of this invention may be made. e

Figure 2 is a section on line 2-2 of Figure 1.

Figure 3 is a perspective view of the point made from the tack of Figure 1. 1 I

Figure 4 is a section on line 4-4 of Figure 3.

Figure 5 is a view similar to Figure 4, but showing a modified construction.

Figure'6 is a perspective view illustrating the manner in which blanks to be formed into the points of this invention may be cut from sheet stock.

Figures '7 and 8 are somewhat diagrammatic sectional views illustrating successive steps in the formation of a point from the blank shown in Fi e 6. l I

Figure 9 is a perspective view of the point formed by the method illustrated in. Figures '7 and 8. Figure 10 is a fragmentary section through a window sash showing the point of Figure 3 in driven position.

Referring first to Figures 1 and 2 of the drawing, there is indicated a tack having a flat shank produce the flat thin shank having its width substantially greater than its thickness as shown. Such a tack may then be formed into the point of this invention by bending substantially onehalf of the headBatoneside of'theflat shank l into substantial alinement with the shank as shown' at 4in-Figures 3 and 4. This produces a point having thezflat pointed shank 2 sharpened both in width and thickness which may bedriven into the sash 5, as shown in Figure 10, the imperforate. portion 4 of the point overlying the glass or window pane), and the portion H of the point head, which remains in its originaliposition, forming an abutmentengaging the sash and holding the shank in its proper "position penetrating straightinto' the sash. The portion ll, there fore, acts as an abutment which holdsthe point against lateral tilting, and it'alsoprovides a head which maybe engaged by the end of the putty knife, screwdriver, or other simlar tool bywhich pressure "may be exerted to'force the point into its' proper' place. The portion 4 of the head also acts/as an abutment to hold the tool in proper position during the driving operation. As the shankpo'rtion itself is relatively narrow, it is desirablethat the head be substantially wider than theshank in order to form. a broad bearing for the tool by which the point is forced into position, and to form an engagement of sufiicient length on the sash to insure against tilting of the point when driven. The ordinary formation of the flat shank tack in a. tack machine, will of itself produce a head of the desired width greater than that of the shank.

The point may, however, be formedby other means. For example, in Figure 5 the point is illustrated as formed by casting. This may be done using an alloy similar to type metal such as commonly usedin Linotype and Monotype machines, but preferably provided with a somewhat larger proportion of the stiffer metal constituent of the alloy, such as tin, in order to increase the strength of the point. The casting, however, may be performed in a manner quite similar to thatcommonly employed in type casting.

Another method of formingup the point on a tack machine is illustrated in Figures 6 to 8. Referring to Figure 6, the individual blanks from which the points are made may be cut from a strip of sheet metal of suitable gage as shown at 30. In accordance with the usual practice in tack making operations, this strip is cut diagonally and alternately in oppositely inclined directions to, form the longitudinally tapered blanks 31-. Each blank is then subjected to forming operations between dies 32 and 33 (see Figures '7 and 8) which form the narrower end portion of each blank into the desired flat tapered shank shown at 34 in Figures 7,8 and 9. Preferably The remaining portion of the larger end of the blank is then left as an imperforate projection ,40

lying in alinement with the fiat shank 34 and extending beyond the flange 38 on the side opposite to the shank 34. Thedriving of the point formed i in this manner is the same as" that for driving the points constructed in the manner shown in Figures 1 to l, or cast as in Figure 5. 1

The points made in accordance with this invention are easy to set, and due to the small size necessary for the shank portions, may be made from metal in amount of about one-half of that required for the usual triangular points, so that there is marked economy in the amount of metal required When constructing the points in accordance with this invention.

From the foregoing description of certain embodiments of this invention, it should be evident to those skilled in the art that various other changes and modifications might be made without departing from the spirit or scope 'of this invention as defined by the appended claims.

We claim:

1. A glaziers point having a thin pointed shank adapted to be forced into a sash outwardly of the glass and an integral head on said shank having a portion lying substantially in alinement with said shank and adapted to overlie the glass and a singlethickness portion extending laterally thereof on one sideonly and adjacent to the juncture of said shank, and portion and extending the full width of said shank and adapted to extend outwardly from the glass and to form an abutment limiting the depth to which the point may be driven into the sash.

2. A glaziers point having a thin pointed shank adapted to be forced into a sash outwardly of the glass and an integral head on said shank having a portion lying substantially in alinement with said shank and adapted to overlie the glass and a single 'thi'kness poftfion extending laterally thereof on one side "only and adjacent to the juncture of said shank and portion and adapted to extend'outwardly from the glass and l to form an abutment limiting the depth to which the point may be driven into the sash, said lateral extending portion extending across the fullwidth of said shank and being of a width substantially greater "than that of said shank.

3. A glaziers point having a thin pointed shank tapered in both width and thickness abutment limiting the depth to which the point may be driven into the sash. l

4. A glaziers point having a thin pointed shank adapted to be forced into a sash outwardly of the glass and an integral imperforate head on said shank having a portion lying substantially in alinement with said shank and adapted to overlie the glass and a single thickness portion extending outwardly from the glass adjacent to the juncture of said shank and portion and. along the outer face of said shank to form an abutment limiting the depth to which they point-=may be driven into the sash. g

CHARLES vv. s KI N NhRl EDWARD RAYlVlO ND QMORRlSr

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