US1126423A - Sandpaper belting. - Google Patents

Description

G. H. DRIVER. SANDPAPER BELTING.

APPLICATION FILED FBBA, 1914.

1,126,423, Patented Jan.26,1915.

Witnesses details of construction hereinafter described CHARLES H. DRIVER, 0F RACINE, WISCONSIN, ASSIGNOR TO C. H. DRIVER & KERR. (10.,

' 0F RACINE, WISCONSIN.

SANDPAPER BELTING.

Specification of Letters Eatent.

Patented J an. 26, 11915.

To all whom it may concern:

Be it known that 1, CHARLES H. DRIVER, a citizen of the United States, residing at Racine, in the county of Racine and State of Wisconsin, have invented a new and useful Sandpaper Belting, of which the following is a specification.

The presentinvention aims to provide, as

provide a process whereby a strip of abra-' sive material may be adapted for use in the formation of a sand belt so called.

It is within the scope of the invention to improve generally, the construction of sand belts, and to improve processes whereby a strip of material is adapted for use in the formation of a sand belt.

With the above and other objects in view which will appear. as the description proceeds, the invention resides in the combination and arrangement of parts and in the and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from'the spirit of the invention.

In the accompanying drawing':Figures 1, 2 and 3 are longitudinal sectional views illustrating various steps in the manufacture of a sheet of abrasive material for use in a sand belt; Fig. 4 is a perspective showing a strip of material disposed in roll form; Fig. 5 is a perspective showing a detached strip having its ends united to form a belt; Fig. 6 is a fragmental longitudinal section illustrating in detail, the appearance of the ends of the strip at the point of joining; Fig. 7 is a longitudinal sectional view showing a modified form of the invention.

In the accompanying drawing, the numeral 1 indicates generally a strip of sand i pitper. In this connection, the word sand is to beconstrued as meaning any abradant and the wordf'f paper is to be construed as meaning any flexible substance to which an abrad'ant may be attached.

The sheet of. sandpaper comprises a flexi ble body 2 carrying an abrasive indicated at? The sheet or strip may be of any de- SIIGd length and originally appears as shown 1n Fig. l of the drawing. In the abrasive face of the strip there is formed a recess 4 definlng a bevel 5 in the body 2 and defining bevels' 6 and 7 in the abradant 3, the article then appearing as shown in Fig. 2.

In the under face of the strip and more specifically in the body 2 there is formed a recess 8. This recess 8 overlaps the recess 4 longitudinally of the strip.

2 By the operation above described, a bevel '9 will be formed in the under face of the body portion 2 of the strip, the article now appearing as shown in Fig. 3. It is to be observed that by the process as thus far carried out, the strip is thinnest as indicated at 10, at a point adjacent the bevel 7 The concavities above referred to extend entirely across the strip of material and are formed at intervals. Ordinarily, the strip, having been cut away upon its opposed faces at spaced intervals, as shown in Fig. 3, is formed into a roll 11, as depicted in Fig. 4. The article is now in condition for sale.

The user, having before him the roll 11, unwraps therefrom a portion of the roll, and tears ofl a section at the point 10. Since this point 10 is adjacent one edge of the abradant 3, which edge may be taken to be represented by the bevel 7, it may be observed that the abradant at this point serves to stiffen the strip and facilitates the tearing ofi of the section. After a section has been detached from the roll 11, the ends of the section are brought together to form a belt as shown at 12 in Fig. 5, the bevel 9 beingoverlapped upon the bevel 5 as shown in Fig. 6, the beveled faces 5 and 9 being cemented together or otherwise secured to form the joint 14 in the belt 12. By the operation above described the belt is of approximately the same thickness at the joint as elsewhere. Further, owing to the formation of the bevels 6 and 7 in the abradant there is no abrupt joint where the ends of the section are brought together to complete the configuration of the belt as shown in Fig. 5.

The importance will be readily understood when it is noted that the purchaser desiring a sand belt merely unwraps a section from the roll, tears ofi' the section, andunites the beveled ends,

it being unnecessary to scarf, pare or otherwise operate mechanically upon the ends of the section, in order to obtain a satisfactory joint. Although the concavities 4 and 5 are shown as of straight line configuration, longitudinally of the belt, it will be understood readily that the concavities may be varied in outline, Figs. 2 and 3 being largely.

the strip are indicated at 29. It is at these points 29 that the strip is severed. In the of the present invention form of invention under discussion, a comparatlvely short plece of waste mater1al 1ndicated at 30 results.

Having thus described the invention, What is claimed is 1. As an article of manufacture for use in the formation of belts, a strip of abrasive material having spaced pairs of concavities extended thereacross at intervals, the concavities of the respective pairs being formed in opposed faces of the strip. 1

2. As an article of manufacture for use in the formation of belts, a strip of abrasive material having concavities extended entirely tliereacross, at intervals, the concavities being spaced from each other to define belt lengths and certain of the .concavities lying between the ends of the strip to facilitate the separation of a belt length from the strip.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

CHARLES H. DRIVER.

WVitnesses RALPH T. INGAIZLS, WALLACE INGALLS.

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