US1192715A - Machine for dressing the edge portions of metal-ware articles. - Google Patents

Description

F. J. VELMURE.

MACHINE FOR DRESSING THE EDGE PORTIONS 0F METAL WARE ARTICLES.

APPLICATION FILED FEB. 15, I916.

1 1 92,7 1 5. Patented July 25, 1916.

FRED J. VELMURE, OF MEDFORD, MASSACHUSETTS.

MACHINE FOR DRESSING THE EDGE PORTIONS OF METAL-WARE ARTICLES.

Specification of Letters Patent.

Patented July 25, 1916.

Application filed February 15, 1916. Serial No. 78,385.

To all whom it may concern-.-

Be it known that I, FRED J. VELMURE, a citizen of the United States, resident of Medford, in the county of Middlesex and State of Massachusetts, have made a certain new and useful Invention in Machines for Dressing the Edge Portions of Metal-VVare Articles; and I declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it appertains to make and use the invention, reference being bad to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Figure 1 is a front view of the machine, Fig. 2 is a side view of the same, Fig. 3 is a detail plan view of the work holder showing the bracket in part, and the belt in section.

The invention has relation to a machine for dressing the edges of metal ware, such as trays, dish covers and the like, and it consists in the novel construction and combinations of parts, as hereinafter set forth.

In the accompanying drawings, illustrating the invention, the numeral 2 designates an upright frame, usually bolted to the floor. Disposed at one side of said frame, usually the left hand side, is an upright flexible endless belt 3, having a length nearly equal to the height of the frame, and being carried by an upper drive pulley 4c and a lower idler pulley 5. 7

Located about midway the height of the frame is a bracket 6, having a horizontal top 7 said top usually terminating in an inclined outer edge 7, and carried by said bracket is a work holder 8, extending laterally of the bracket obliquely outward or toward the operator and terminating at its outer end in front of the flat surface ofthe belt 3, said belt being arranged with its outer fiat surface or side facing the operator or workman, who stands facing the belt and holds the work in horizontal position with the workresting upon said holder and the horizontal edge portion of the work presented toward the belt.

Located above the work holder and adjacent thereto is an idler pulley 9, bearing against the inner surface of the outer stretch of the belt and bowing the same outwardly, the upper inclined portion 10 of the outer stretch of the belt extending downwardly and outwardly from the upper pulley to- The inner stretch of the belt is spaced t apart from the frame by an interval 11, the supports for the idlers being of suitable length for this purpose. The lower idler pulley is preferably adjustable, being carried by an arm or block 12, pivoted at its lower rear portion at 12 to the frame and having a rear inclined surface 13, against which bears an adjusting screw 14. The screw end will take a sliding fulcrum bearing against the inclined rear surface of the block 12, to move the lower pulley downwardly and stretch the belt. The upper pulley 4 is made fast to the end of a shaft 15, having journal bearingsin boxes 16 carried by outwardly extending arms 16, bolted to the frame at 17, a drive pulley 18 being located between said boxes, upon said shaft.

In practice, if the work is, for instance, a tray having a depressed center or receptacle portion, the shoulder formed by the side wall of said depressed portion is held against an upright pin 19 of the work holder, with the outwardly extending, substantially horizontal edge portion of the tray extending over said pin, in contact with the belt. Straight portions of the edge of the metalware article being dressed are presented to the flat surface of the belt, while inwardly curved or reentrant angular portions of said edge are presented to the edge portion of the belt, the article being turned pivotally to either side while bearing a gainst said pin, to engage either edge portion of the belt.

In some cases, where the article having its edge dressed-has no shouldered side wall, the pin 19 may be removed and the article held or supported flatwise upon the work holder. And in cases where the article is of considerable size or length, it may be turned at right-angles to the frame and to the belt, the article extending rearwardly of the belt and of the frame at the left-hand side of the same, the belt projecting slightly beyond the upright edge of the frame at this side, so that the article will not come in contact with the frame. And when the article having its edge dressed is required to be turned inwardly to engage the right-hand edge portion of the belt, the work holder, being inclined inwardly, will facilitate this turning movement of the" article and avoid contact of the hand of the operator with the said holder.

It is required that the flexible belt shall belt, the horizontaledge portion of said article is always plainly in view of the operator.

The work holder .is connected to the bracket by a'clamp bolt 21, engaging a slot 22 of the holder, whereby the said holder may be adjusted inwardly and outwardly, lengthwise and also pivotally, as may be required to suit the work. The belts are provided in different sizes or widths, usually in three widths, the carrying pulleys being provided in sizes to accord with the size of the belt being used, and removed and replaced as may be needed for this purpose.

In dressing the edges of metal-ware articles a special belt is needed, in order to avoidnthe abrasive substance uponthe belt being removed therefrom by the metallic contact. It has been found in practice that the best belt to stand the wear is made of canvas, a coating of suitable glue being first applied to the canvas and dried, and a coating of a pasteof glue, rosin and emery dust, mixed insuitable proportions, being then applied to the belt and dried. The rosin in the mixture or paste will make the same more tenacious, so that the abrasive will not become detached from the belt, and at the same time will render the paste more flexible, so that it will not crack.

I claim: 1

' 1. In a machine of the class described, an upright frame, upper and lower pulleys carried thereby, an upright flexible abrasive-belt carried by said pulleys, a work holder located about midway of the length of said belt, an idler pulley located within said belt adjacent to and spaced apart from the work holder and bearing against the inner side of the belt to stiffen the same, said belt having a rearwardly inclined'stretch located between said idler pulley and said lower pulley, the stiffened portion of said stretch between said idler pulley and said work holder being the operative portion.-

2. In a machine of the class described, an upright frame, a member pivoted to said frame and extending outwardly therefrom, an upper driver pulley, a lower pulley upon said pivoted member, and an upright flex ible abrasive belt carried by the pulleys, said lower pulley and said pivotal member being suspended in the lower bight of the belt and normally stretching the same.

3. In a machine of the classdescribed, an

upright frame, a member pivoted to said frame and extending outwardly therefrom, an upper driver pulley, a lower pulley upon said pivoted member, andan upright flexible abrasive belt carried by the pulleys, said lower pulley and said pivotal member being suspended in the lower bight of the belt and normally stretching the same, and an adjusting screw carried by said frame and bearing at its forward end against the rear surface of pivoted member. 1

- 4. In a machine of theclass described, an upright frame carrying pulleys, an upright flexible belt carried by' said pulleys, having a coating of abrasive material and located at one side of and spaced apart from said frame, a'bracket, and an oblique work holder upon said bracket and extending outwardly adjacent to the front face of said belt, said work holder having a clamp bolt connection 7 Copies o fthis, patent may be obtained for five cents each, by addressing the Commissioner of Patents, 7

' Washington, D. G.

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