US1003021A - Razor-stropping machine. - Google Patents

Description

v .S. WILLETT. RAZOR STROPPING MACHINE.4 APPLIUATION H LED 21:14.15, 1910.

Patented' Sept. 12,1911;

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SAMUEL XVILLETT, OF TOTTENHAM, LONDON, ENGLAND.

RAZOR-STROPPING MACHINE.

.To all whom it may concern.-

Be it known that I, SAMUEL VVILLETT, subject of the King of Great Britain and Ireland, residing at 124 Broadwater road, r.l`ottenhan`i, county of Middlesex, London, England, manufacturer, have invented certain new and useful Improvements in ltazor-Stropping Machines, (for which I have obtained Iietters Patent in Great Britain, No. 3,698, dated February 15, 1909,) of which the following is a specification, ref* erence being had to the accompanying` drawing.

ylhis invention relates to an improved machine for stropping safety razor blades known as double-edge wafer-blades.

The machine comprises a frame carrying, as usual, a pair of rollers, and midway between which is pivotally mounted, according to my invention, a split spindle t0 receive an adapter or holder, (of special` lconstruction as hereinafter fully described) for carrying the razor blade. This spindle is furnished at its inner end with a pinion, and on the inner ends of the rollers are mounted toothed sectors which mesh with the aforesaid pinion, and by means of which a slight vibratory movement is imparted to the razor blade, when the machine is passed to and fro along the strop. Or the split spindle may be interconnected to the said rollers by means of a plate or bar provided at its ends with pins engaging in slots in arms or links mounted fast on the rollers. And in order that my invention may be more clearly understood, I will now describe it fully with reference to the accompanying drawings, wherein:

Figure 1 is a front elevation of my improved stropping machine. Fig. 2 a plan, and F ig. 3 a section on the line x, m, of Fig. 1. Fig. 4t shows the adapter detached from the split spindle, and Fig. 5 illustrates the said spindle. Fig. 6 is a front elevation, and Fig. 7 a plan, on the line y, y, of Fig. 6, illustrating the modified arrangement for vibrating the spindle. Fig. 8 is a section on line 8 8 of Fig. 2; and Fig. 9 is a section on line 9 9 of Fig. 2.

In a suitable frame, constituted by a top plate a, and a bottom plate Z2, connected together by two rods, c, c, are the rollers c1, c1, which are mounted on the said rods. Midway between these rollers, and pivotally mounted in the bottom plate o of the frame, is the axis or spindle a?, which is split lon- Specication of Letters Patent.

Patented Sept. 12, 1911.

Application filed February 15, 1910. Serial No. 5-.4=A,035.`

gitudinally to receive the adapter or holder e, carrying the safety razor blade. This spindle d, is furnished with a pinion f, which meshes with twotoothed sectors f1, j, arranged on opposite sides thereof, and fast on the rollers c1, 01,' the outermost teeth of each sector being made wider than the intervening teeth, so as to keep the said sectors always in mesh with the pinion f. Normally, the razor blade i lies in the plane of the rollers, and hence the machine can be handled freely without fear of cutting ones self.

The adapter or holder e, for the razor blade z', consists of a pair of spring aws el, between which the blade is clamped. rlhese jaws are, according to the present invention, fixed at one end in a head or button c2, formed with a tubular recess or socket c3 and, when the adapter or holder is inserted in the split spindle d, the said tubular recess or socket e3, takes over the upper or outer end of the spindle and clamps the jaws of this latter against the adapter The head or button e2, passes into an opening al, in the top plate a of the frame, and serves as a journal for the spindle al; this plate being further formed with two other openings a2, communicating with the cen tral opening a1 by slots o3, so as to afford a ready passage to the adapter and razor blade, and prevent injury to the edges of the latter during insertion into the machine. As shown in Fig. 4, the spring jaws e1 of the holder e are provided with outer longitudinal projections eX adapted to engage with the interior of the spindle.

According to the modification shown in Figs. 6 and 7, a bar or plate g, is mounted on the split. spindle d, and takes the place of the pinion f, the toothed sectors f1, f1, being replaced by arms or links z, It., provided with slots 71,1, 77,1, into which engage pins g1, g1, on the ends of the bar or plate g. rlhis arrangement while equally well answering the purpose of that previously described is cheaper to construct.

The razor-blade i having been inserted in the adapter e, and this latter clamped within the split spindle Las above mentioned, stropping of the blade is effected by laying the frame of the machine on the strop and then, by means of the handle j, passing the machine to and fro thereon. The frictional contact between the rollers c1, c1, and the strop, will cause the former to vibrate and impart, through the toothed gear, or the of the blade alternately to the strop. By

turning` over the machine, and proceeding as before, the stropping of the two edges on the other face of the blade is effected. It is to be thus understood, that, in my construction of stropping machine, the razor blade does not perform a half revolution, butvibrates only to such an extent as -to strop first the edge on oneside of the blade, and then the edge on the opposite side of theblade, but on the same face.

Having now particularly described and ascertained the nature of my said invention, and in what manner the same is to be performed, I wish it to be understood that I lay no broad claim to the arrangement of the toothed pinion and toothed sectors by themselves, but

I declare that what I claim is 1. A machine for stropping safety razor blades comprising a spindle and an adapter or., holder comprising spring jaws, between which the razor blade is held, and a tubular head or button, thi's latter, when the razor blade is inserted in the spindle, operating to clamp the spindle to the adapter or holder and also serving as a journal for such spindle.

2. A holder for double edged razor blades, in stropping machines, comprising a rocking spindle, anda pair of spring jaws between which the blade is adapted to be inserted, said spring jaws havingat their outer ends a tubular head adapted to inclose the ends of the rocking spindle and to constitute a journal therefor, said jaws bcing provided with outer longitudinal projections adapted to engage with the interior of the spindle.

In witness whereof I have hereunto set my hand in presence of two witnesses.

SAMUEL 7WILLETT.

Witnesses WALTER TYZARK, H. D. JAMESON.

Copies of this patentrmay be obtained for ve cents each, by addressing the Commissioner of IPatents, Washington, D. C.

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