US1211532A - Phonograph-needle cutter. - Google Patents

Description

B. B. BLOOD.

PHONOGRAPH NEEDLE CUTTER.

APPLICATION FILED FEB. 14.1914.

Patented Jan. 9, 1917.

W" was nnrrnn snares rnrnnr armon BUB/R B. BLOOD, OF CHICAGO, ILLINOIS, ASSIGNOB TO CARLYLE MAGHARG, OF CHICAGO, ILLINOIS.

PHONOGBAPH-NEEDLE CUTTER.

Specification of Letters Patent.

Patented Jan. Q, 1917.

Application filed February 14, 1914. Serial No. 818,622.

To all whom it may concern:

Be it known that I, BURR B. BLOOD, a citizen of the United States of America, and resident of Chicago, Cook county, Illinois, have invented a certain new and useful Improvement in Phonograph-Needle Cutters of which the following is a specification.

My invention relates to cutters for sharpening fiber phonograph needles. Ordinarily, and if not re-sharpened, these needles, which are made of bamboo, are thrown away after being used once. Some attempt has been made to provide cutters for sharpening these needles. It is to cutters for this particular purpose that my invention relates.

The object of my invention, generally stated, is to provide a cutter of simple and durable construction, which will sharpen the needles more satisfactorily than heretofore, and which can be manufactured cheaply.

A special object is to provide an improved construction and arrangement whereby the knife can be easily removed and replaced, whereby the device can be operated easily and with certainty, and whereby the cutting of the bamboo or fiber will produce a sharp point of the requisite character.

It is also an object to provide certain details and features of construction tending to increase the general efficiency and serviceability of a phonograph needle cutter of this particular character.

To these and other useful ends my invention consists inmatters hereinafter set forth and claimed.

In the accompanying drawings-Figure 1 is a side elevation of a phonograph needle cutter or sharpener embodying the principles of my invention. Fig. 2 is a sectional view of the cutting mechanism of said device, on a larger scale, showing the adjacent portions of the handle. Fig. 3 is a section on line 33 in Fig. 2. Fig. 4 is a front elevation of the mechanism shown in Fig. 2. Fig. 5 is an enlarged detail section on line 5 5 in Fig. 3. 1

As thus illustrated, my invention comprises a pair of handles A and B pivotally connected together at C, said handles being formed from sheet metal. The rectangular body D is pivotally connected at one end thereof with the ears (0 of the handle A, and is provided with a recess d in the face thereof. The sliding block E is mounted to reci )rocate in the recess d, upon the surface (Z of the body, and is pivotally connected at c with the ears Z) of the handle B, it being understood that said ears embrace the body. A knife F is mounted upon the face of the block E, with its edge f overhanging the recess 6 in said block. lhe rear end portion f of the knife is formed at right angles to the body of the knife and engages a slot 6 in the said block, being readily removable therefrom. With this arrangement the said knife is held in place by a face plate which is secured to the body D by screws 9, said plate providing a smooth surface upon which the knife slides back and forth. It will be seen that said plate has an opening 9 and that a gage plate H is secured upon the outer surface of the plate G, being provided with flanges /1. at each side thereof. These flanges engage the edges of the plate G, and the plate H is held in place by the lower screw 9, whereby the structure is firmly held together. The plate H has an angular and outwardly extending portion 7L provided on its inner side with a dovetailed groove 72 for the insertion of the needle.

The method of use is as followsr The needle is inserted endwise in the groove 7& until it engages the stop or abutment e which latter is integral with the sliding lock E and which limits the insertion of he needle to bring the end thereof into proper position relative to the knife. Then the handles are brought together,causing the knife edge f to cooperate with the stationary knife edge I in cutting off a small end portion of the needle. The hard or glossy side of the bamboo needle is preferably placed against the bottom of the groove if, and this brings the needle into such posiion that the edge f enters the soft side of the needle and cuts through to the hard layer at the otherside. This puts a good point on the needle, and leaves it perfectly sharp, instead of making it rough or ragged.

By reason of the two pivotal connections 6 and J, the knife 'reciprocates along a straight line, and the result is that the cutting is of the required characterthat is to say', the end ofthe needle is cut off clean and sharp. one of the screws 9, so that the plate'G can be swung to one side, the knife F can be removed and sharpened, or replaced by a new one when worn out. The corner portions K of the ears 5 extend over the rear end'portions f of the knife, whereby the latter is held against lateral displacement. In this way the knife does not need to be fastened in the block E, but is simply inserted in the slot 6 the portions K and the plate G cooperating to hold the knife'against displacement, The said knife can be made of springy steel, so that when the plate G is secured in place the knife will be placed under some tension, thus insuring a tight contact between its edge and the smooth end surface of the plate G, in order to insure the proper cooperation between the two cutting edges. Gag-e h it will be seen, not only leans toward the plate G, butalso to one side, (see Fig. l), whereby the needle is given the well known and proper bevel at the end thereof, when the hard or glossy side of the needle is placed in the groove h formed on the face of said gage.

It will be understood, of course, that the two handles A and B can be held yieldingly apart by a spring L or any other suitable means. Then the handles are'released, this spring moves or restores the parts to the relative positions shown in the drawings.

My invention contemplates broadly a phonograph needle cutter which can be held in one hand and operated while the needle is presented to the cutter by the other hand, and it also contemplates certain features of improvement in needle cutters broadly, as herein shown and described, and I do not limit myself to the exact construction shown and described.

What I claim as my invention is 1. A phonograph needle cutter comprising a body, a cutting edge, a block reciprocating onsaid body, a knife on said block,

adapted to cooperate with said edge, means for holding the needle in position between said knife and edge, and means for causing said block to reciprocate relative to said body, said knife being'removably held on said block, and said means for reciprocating the block comprlslng a P34113013 pivoted handles, one handle having end portions It will also be-seen that by moving for holding the needle in position between said knife and edge, meansfor causing said block to reciprocate relative to said body,

said body being recessed to form a working space for said block, and a removable plate disposed over said space, secured at its ends to the ends of said body, holding said knife and block in operative position, provided with an opening'for the end of the needle.

3. A phonograph needle cutter comprising a body, a cutting edge, ablock reciprocating on said body,"a knife on said block,

adapted to cooperate with said edge, means for holding the needle inposition between said knife and edge, meansfor causing said block to reciprocate relative to said body, said meansfor reciprocating the block having ears which overlap the edges of said knife, thereby holding the latter against displacement, and means for pivoting said ears on the sides of said block.

4. A phonograph needle cutter compriscating onsaid body, a knife on said block,

adapted to cooperate with said edge, means said'axes being disposed respectively at the mg a body, a cutting edge, a block reciprothree corners of a variable triangle, said knife having motion about two of said axes, and said body having motion about the third axis. v

A phonograph needle cutter comprising a body, a cutting edge, a block reciprocating on said body, a knife on on side of said block, adapted tocooperate with said edge, the opposite side of said block having sliding engagement with said body, means for holding the needle in position between said knife andedge, and means for causing said block to reciprocate relative to saidbody, said block'having a portion that. forms an abutment for the end of the needle, spaced a distance from the cutting edge of the knife, a recess for the cuttings between said knife and portion, said body'having a smooth surface which forms a backing for said block to maintain said knife against said edge, a handle pivoted on said block to operate the cutter, said handle having means to prevent lateral displacement of said block, and means engaging the and forth motion thereof. r r

1251 opposite ends of said blockto limit the back ing a body, a cutting edge, a block reciprocating on said body, a knife resting flatwise against the face of said block, on said block, adapted to cooperate with said edge, means for holding the needle in position between said knife and edge, and means for causing said block to reciprocate relative to said body, the said knife having a portion which is removably' inserted in said block, and a removable plate for holding said block in position, secured to said body, serving to hold the knife against outward displacement from said block.

7 A phonograph needle cutter comprising a body, a cutting edge, a block reciprocating on said body, a knife removably held in position on said block, adapted to cooperate with said edge, means for holding the needle in position between said knife and edge, and means for causing said block to reciprocate relative to said body, the means for reciprocating the block having oppositely arranged pivoted portions which extend into position to hold the knife against lateral displacement.

8. A phonograph needle cutter comprising a body, a cutting edge, a block reciprocating on said body, a knife on said block, adapted to cooperate with said edge, means for holding the needle in position between said knife and edge, and means for causing said block to reciprocate relative to said body, the means for reciprocating the block comprising a pair of handles which are pivotally connected together between their ends, one handle being pivoted on said block, and the other handle being pivoted on said body, providing three parallel aXes of operation disposed at the corners of a triangle.

9. A phonograph needle cutter comprising a body, a cutting edge, a block reciprocating on said body, a resilient knife on said block, adapted to cooperate with said edge, means for holding the needle in position between said knife and edge, means for causing said block to reciprocate relative to said body, a plate for holding said knife under tension, having said edge formed by an opening therein, and means for removably securing said plate to the body, said plate holding said block in position on the body, and the tension of the knife causing constant pressure thereof against said plate and edge.

10. A phonograph needle cutter comprising cutting mechanism for trimming the worn out end of the needle obliquely thereto, a pair of handles for operation by one hand, said handles pivoted on each other, the ends of said handles being pivoted on said mechanism, said mechanism having a cutting plate disposed in a plane parallel with the axes of said handles.

11. A phonograph needle cutter comprising cutting mechanism for trimming the worn out end of the needle obliquely thereto, a pair of handles for operation by one hand, said handles pivoted on each other, the ends of said handles being pivoted on said mechanism, a spring for moving said handles apart, said mechanism having cutting edges cooperating in a plane parallel with the axes of said handles, and stops for limiting the operation of said handles by said spring and hand.

12. A phonograph needle cutter comprising cutting mechanism for trimming the worn out end of the needle obliquely thereto, and a pair of handles for operation by one hand, said handles pivoted on each other, and the ends of said handles being pivoted on said mechanism, said mechanism including a body having the pivot of one handle, a block carrying the pivot of the other handle, sliding on said body, a knife on said block, and a plate on said body, serving to hold said block in place, provided with an edge cooperating with said knife.

13. A phonograph needle cutter comprising cutting mechanism for trimming the Worn out end of the needle obliquely thereto, and a pair of handles for operation by one hand, said handles pivoted on each other, and the ends of said handles being pivoted on said mechanism, said handles having ears which embrace said mechanism, and said mechanism including a removable knife held in position by the ears of one handle.

14-. A needle cutter comprising a body having a guide-way, a block arranged to re ciprocate in said guide-way, a knife on said block, a plate providing a smooth surface for said knife to slide upon, said knife being disposed fiatwise between said plate and said block, said plate having an opening providing an edge to cooperate with said knife, the cutting edge of said knife being beveled only on the side thereof away from said plate, means to hold the needle in said opening, means on said block to engage the end of said needle, said block and knife occupying the space between said guide-way and plate, and mechanism for relatively reciprocating said block and body, said mechanism including a pair of crossed handles, a pivotal connection between said handles, a spring for forcing said handles apart, a pivotal connection between one handle. and said body, and a pivotal connection between the other handle and said body.

15. A needle cutter comprising a body having a guide-way, a block arranged to reciprocate in said guide-way, a knife on said block, a plate providing a smooth surface for said knife to slide upon, said knife being disposed fiatwise between said plate and said block, said plate having an opening providing an edge to cooperate with said :knife, the cutting edge of saidknife being beveled only on the side thereof away from said plate, means to hold the needle in said opening, means on said block to engage therend of said needle, said block and knife occupying the space between said guide-Way and plate, and mechanism for relatively reciprocating said block and body, said mechanism including a pair of Witnesses RAGHEUJ, RICHARDSON, ROSE SEHNEM.

Copies of this patent may be obtained for five cents each, by addressin'g'the com missioner 'of Patents,

- Washington, D. G. V r

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