US1548774A - Brush-tufting machine - Google Patents

Description

Aug. 4, 1925. 1,548,774

' H. W. ARONSON BRUSH TUFTING MACHINE Original Filed Dec. 13, 1919 2 Sheets-Sheet 1 Aug, 4, 1925. I 1,548,774

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Patented Aug. 4, 1925.

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HOLGER W. ARONSON, OF ST. PAUL, MINNESOTA, ASSIGNOR OF ONE-HALF T0 EDWARD SVVANSON AND ONE-HALF T0 ALBIN R. SWANSON, BOTH OF ST. PAUL, MINNE- SOTA.

BRUSH-TUF'IING Ii/IACHINE.

Refiled for abandoned application Serial No. 344,733, filed December 13, 1919.

October 15, 1923.

To all whom it may concern.

Be it known that I, HOLGER W. ARoNsoN, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented a new and useful Improvement in Brush-Tufting Machines, of which the following is a specification.

This application is a substitute for my abandoned application filed Dec. 13, 1919, Serial No. 344,733.

My invention relates to a brush tufting machine which is designed to draw the tufts which make up a brush into the brush head in an easy and effecting manner. The operating parts of my device are of extremely simple construction so that it does not require one very skilled in the brush making art to learn to operate my device or to become thoroughly familiar with the operation so as to readily operate the machine to rapidly fill a brush head with bristle tufts.

An essential feature in making a good brush, which is composed of a series of bristle tufts held in the brush head by wire loops, is to have each tuft large enough to fit the tuft socket in the brush head tightly and if the brush is made up in this manner the life of the same is greatly increased. Therefore, it is very important in the mak ing of a, good bristle brush to have each tuft of a certain size and to draw the same tightly into the brush head without breaking the wire loop which holds the tuft. My device is arranged so that the operator can manipulate the same very rapidly and thus enable him to fill a large number of brush heads in a comparatively short time. An essential feature 'of my device is the conveniently arranging of the various parts for the operator.

It has been found not to be practical to draw the wire loops which hold the bristle tufts into the brush head too tight, such as r has been done with mechanically operated devices, as otherwise they are liable to break and this is detrimental in the filling of a brush head, because if the wire breaks it takes time to repair the same before the operator can again continue to draw more This application filed Serial No. 668,757.

bristle tufts into the brush head. Therefore, an essential feature of my device is in means which are arranged so that the operator can manually operate the wire drawing mechanism to pull the tufts into the brush head and he can readily tell how much force is necessary for the same. It is also desirable to operate at times the wire spool in either direction and my device is designed to readily operate in either direction.

In the drawings forming part of this specificatlon Figure 1 is a front view of my brush tuft drawing machine.

Figure 2 is an end view of Figure 1, a portion of which is broken away.

Figure 3 is a section on the line 33 of Figure 2.

Figure & is a section on the line H of Figure 3.

Figure 5 is a front view of a diflerent construction of my device.

Figure 6 is an end view of the device illustrated in Figure 5, a portion of which is broken away.

Figure 7 is a view of a tool which is used in connection with my device.

The drawings illustrate the brush drawlng machine A provided with a brush head clamp B into which the brush head G can be readily clamped or disengaged so as to insert another brush head. The clamp B is secured to a suitable bench or table 10, being positioned in a forwardly extending angle by the block 11 to which the brackets 12 of the clamp B are rigidly secured. A longitudinally extending clamping bar 13 is held in position by the coil springs 14;, which are positioned between the brackets 12 and which tend to force the clamping bar 13 upward so'that when the cam levers 15, which are pivotally connected to the upper ends of the brackets 12, are released out of clamping position, the bar 13 is raised to allow the brush head C to be freely disengaged from the clamp B. The brush head 0 can be easily inserted in the clamp B owing to the springs 14 holding the clamping bar 13 out of engaging position, and by operating the cam levers 15 into locking poengagement with the brush head G to rigidly clamp the brush head to hold it in position while it is being filled with bristle tufts. It is very desirable to have the clamp B set at a forwardly inclined angle toward the operator so that the brush head is readily accessible to him. w

Arms 16 extend forward from the bench or table 10 and are adapted to support the longitudinally extending bar 17 on which the spool of wire D is held freely movable longitudinallyof the bar 17 but against r'otation on the bar, due to the angularshape of the bar 1? and to a similar shaped opening formed in the axis of the spool D. When the shaft or bar 17 isrotated by the handle -18, the sp'oolD can'be moved longitudinally of the bar 17 to position the spool, with its wire 19, directly in line with the bristle tuft opening inwhich the operator is about to draw a bristle tuft so that when the wire 19 is forcedinto one of the tuft openings 20 formed in the brush head C, by using the tool E the wire isiextendedthrough the tuft opening 20 to form a receiving loop 21 into which a bristle tuft F is inserted and by engaging the handle 18, the operator rotates thespool D to draw the wire 19 sent ciently tight to pull the tuft 'F into the enlarged portion 22 of the openmg 20 to firmly hold the tuft in the brush head C.

The free longitudinal movement-of the spool D on theshaft 17 allows the spool to be so positioned that the wire 19 w ll extend "directly in line with the opening in which the operator is pulling or desires to insert a bri's'tle tuft in the head C, so as to give a straight pull on the wire 19 and thereby prevent kinking of the wire and translni'ttin the tension on the wire directly to the hand of the operator engaging the handle 18. This construction prevents the operator from readily breaking the wire 19 and also overcomes any unnecessary friction on the wire. I

An arm 23 is pivotally connectedto the shaft 24: so as to be freely moved longitudinally on the shaft and is foimed with a forward engaging end 25 which engages against the wire 19 on the spoolD to hold thesame against unwinding duringthe operation of the device A. The rear'end of the arm '23 is formed with a weighted portion 26, which is of suitable size to hold the forward end 25 against the wire on the spool With sufficient friction to keepthe wire taut on the spool and to prevent the spool fromreadily turna ing'; In this manner, tl-1e arm 23 forms a check against the free rotation of the spool D, which firmly holds the wire 19 on the spool. a i V In operating the device A, itis very often desirable to rotate the handle'18 in a back-v ward directionto unwind the wire19 on the the oppositedirection.

spool D, for instance, when it is desired to insert a portion of the wire through one of the openings 20 in the brush head, the operator can quickly rotate the spool D in either direction so that the device can be operated very rapidly after the operator has become familiar with the same with practically little or no danger of breaking the wire 19 and yet insuring that the tufts F are of sufficient size to make up a good substantial brush. It requires considerable force to pull one of the tufts F into place but by means of the operating handle 18, which can be of suitable proportions, the proper leverage is secured to readily accomplish this purpose and the fact that the tension on the wire 19 is dire'ct-ly transmitted to the operators hand is an important feature of the invention.

The construction illustrated in Figures 5 and 6 is identical in the clamping means of the device A,fand wire holding mechanism. Thespool holding shaft 17 in this construction is connected by a suitable chain27and sprockets 28 and 29 to the foot operating mechanismfio, the crank arm of which is held in suitable bearings inan ordinary, well known manner. By meansof this construe tion, the operator of the device A can use his feet to rotate the spool D in either direc tion to either draw the wire 19 so as to pull a tuft F intovthe brush head C orto give thede'sired slack to the same by rotating in This construction allows the operator to have both hands free i at all times for use in operating't'he device and thereby allows him to manipulate the same rapidly, filling a large number of brush heads C in a very short time. The wire 19 is threaded from one opening20 to another in the brush head until the entire brush head is filledwith bristle tufts F to make up a brush ofthe desired construction, and it is most desirable to have the wire 19 continuous and not broken so as to hold the bristle tuftsF tightly in the brush head.

By means of my device a larger bristle tuft F can be more easily drawn into the brush head and thus give very durable brush. Here-tofore many brushes have been made with tufts too small for the tuft openings in the brush heads and thus it was only a short time before the bristles came out of the brushes and they would be worn out. The ease with which the operator draws the proper sized tufts into'the brush heard with my device makes it more easy to manufacture better brushes. I

In accordance with the patent statutes, I have described the principles of operation of my invention, together with the apparatus which I now consider to represent the 'best embodiment thereof, but I desire to have it understood that the construction shown is only illustrative and that the. in-

vention can be carried out :by othermeaus and applied to uses other than those above set forth within the scope of the following claims.

I claim:

1. A brush tufting machine comprising clamping jaws adapted to hold a brush head rigidly, cam levers for setting said jaws, resilient means for spreading said jaws from the brush head, a spool shaft extending below said clamp adapted to carry a spool of wire freely movable longitudinally of said shaft and means for operating said shaft for the purposes specified.

2. A brush tufting device comprising a brush head clamp, a longitudinal shaft, sup ports for said shaft, a spool of wire slidably mounted on said shaft, said shaft being formed to prevent rotation of the spool thereon and means for rotating said shaft and spool to draw the loop formed in said wire into the brush head held in said clamp to tightly pull the tuft or bristles into the said brush head.

8. A brush tufting device, including means for rigidly holding a brush head, means for supporting a spool of wire so that it is longitudinally movable on said supporting means adjacent said brush holding means to extend the wire on said spool in line with the ope ings formed in the brush head held by said means and means for rotating said spool in either direction for the purposes specified.

4. A brush tufting device, a frame brush head clamping jaws supported at an angle to said frame to extend toward the operator, resilient means for spreading the same, means for supporting a spool of wire so that it is longitudinally slidable on said sup porting means along the side of said jaws and means for rotating said spool in either direction.

5. A brush tufting machine, including an inclined adjustable clamp for rigidly holding a brush head, means for rotatably holding a spool of wire so that said spool is freely movable longitudinally of said clamp means for retarding free rotation of said spool and foot means adapted to operate the spool to rotate the same in either direction for the purposes specified.

6. A brush tuftin apparatus, including adjustable clamping aws for rigidly holding a brush head, resilient means for spreading said jaws from the brush head, cam levers for setting said jaws in looking position, means for holding said jaws to project the upper portion of the same toward the operator, a shaft extending longitudinal ly of said jaws, a wire holding spool keyed to said shaft and freely movable longitudinally thereon but held against rotary motion thereon, wire engaging means adapted to frictionally engage and check the unwinding of the wire on said spool, said engaging meansbeing movable with said spool longitudinally of said jaws and means for operating said shaft to rotate said spool in either direction.

7. A brush tufting machine, including clamping means for holding a brush head, a wire holding spool, means for supporting said spool so that it is longitudinally movable on said supporting means, wire engaging means for frictionally engaging the wire on said spool movable longitudinally with said spool and means for rotating said spool and holding means to draw bristle tufts into a brush head held in said clamp.

8. A brush tufting machine, including a clamping device adapted to rigidly hold a brush head, a Wire holding spool, means for holding said clamping device inclined toward said spool, means for supporting said spool so that it is movable longitudinally of said clamping device and a pivoted arm adapted to frictionally engage the wire on said spool and movable simultaneously with said spool in a longitudinal direction in relation to said clamping device for the purposes specified.

I-IOLGER W. ARONSON,

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