US2709625A - Brush making machine - Google Patents

Description

W B955 J. a. cAmsoN BRUSH MAKING MACHINE Filed March 2'7, 195]. 3 Sheets-Sheet l IN VEN TOR.

J. i. CARL$0N ,,?,,2 BRUSH MAKING MACHINE Filed March 27, 1951,

3 Sheets-Sheet 2 N O s L R A G J BRUSH MAKING MACHINE 3 Sheets-Sheet 3 Filed March 27, 1951 2,709,625 nunsn MAKING MACHINE John I. Carlson, Aurora, Ill., assignor to Carlson Tool & Machine Company, a corporation of Illinois Application March 27, 1951, Serial No. 217,773

14 Claims. (Cl. 300-7) This invention relates to brush making machines.

It is the general object of this invention to produce a new and improved brush making machine.

It is a more specific object of this invention to produce a brush making machine which is provided with a dual magazine including a pair of bristle containing boxes each adapted to contain dissimilar bristles for delivery to the tufting apparatus of the machine.

It is a further object of this invention to produce a brush making machine of the type described in the preceding paragraph and to provide such a machine with means for moving the magazine in synchronism with the means for picking tufts from the magazine and delivering them to the tufting device for insertion in a brush back to provide for automatic selection and insertion of tufts.

Yet another object of the invention is to produce a brush making machine having a picker bar for picking tufts from a magazine and delivering them to a tufting device together with a fork which embraces the picker bar, and to provide such a machine with means for movmaking machine of the type described in the preceding paragraph in which the picker bar is provided with a slot for picking bristles from the magazine and in which States Patent the fork is movable vertically to determine the effective depth of the slot and thus to determine the quantity of bristles picked from the magazine.

Another object of the invention is to produce a. brush making machine having a picker bar including a slot for picking bristles from a magazine and a fork embracing the picker bar and movable vertically to determine the effective depth of the slot, and to provide such a machine with automatically operable means for raising and lowering the fork to determine the effective depthofthe slot.

A further object of the invention is to produce a brush making machine having a dual magazine including two bristle supply boxes adapted to contain dissimilar bristles and having a picker bar including a slot for picking bristles from the boxes and a fork embracing the picker bar and movable vertically to determine the effective depth of the slot, and to provide such a machine with automatically operable devices for moving the magazine to position either box in proper position for delivering bristles to the picker bar, said automatic means being also operable to move the fork vertically whereby the type and amount of bristles delivered to the picker bar for transmission to the tufting device of the machine may be varied.

It is a further object of the invention to produce a brush making machine of the type described in'the preceding paragraphs having means for, preventing intermixture of dissimilar bristles held in the magazine.

Other and further objects of the invention "will be readily apparent from the following description and drawings, in which:

A angers Patented May 31, 1955 Fig. 1 is a side elevational view of a portion of a brush making machine embodying the invention;

Fig. 2 is a view like Fig. 1 of the opposite side of the machine illustrated in Fig. 1;

Fig. 3 is a vertical section along line 3i-3 of Fig. 2; and

Fig. 4 is a horizontal section along line i4 of Fig. 2.

While this invention is susceptible of embodiment in many different forms, there is shown in the drawings and will herein be described in detail one specific embodiment, with the understanding that the present disclosure is to be considered as an exemplitication of the principles of the invention and is not intended to limit the invention to the embodiment illustrated. The scope of the invention will be pointed out in the appended claims.

The devices of this invention are particularly adaptable for use in conjunction with brush making machines of the general type disclosed in the John I. Carlson Patent No. 2,415,083, reference to which may be had for the purpose of illustrating various other parts of the brush making machine not necessarily incident to the invention hereof. Such a brush making machine includes a frame having a horizontal base portion and vertical portions such as 11 which support the various devices which serve to drill holes in a brush back, supply a wire staple to a. staple driving and tufting device, and means for feeding tufts to the tufting device for insertion into the drilled holes in the brush back. As the inventions hereof are concerned primarily with the means for feeding tufts to the tufting device, only those portions of the machine necessarily incident to the inventions will be described herein.

Mounted for horizontal reciprocation on the frame member 10, is a picker bar, generally designated as 12. The picker bar comprises two spaced portions 13 and 14, the portions at their adjacent ends being wedge-shaped, as indicated in Fig. 4, and spaced apart to provide a bristle receiving notch 15. The two portions of the picker bar are each secured to a tie bar 16 which serves to hold the portions together, and the picker bar is slidable in a trackway 17 fixed to the base member it Means, not shown in detail, are provided for reciprocating the picker bar along the trackway 17 from the position illustrated in Fig. 2 at which point bristles are received into the notch 15, to a bristle delivery point to the right (as seen in that figure) where bristles are delivered from the notch to a vertically reciprocable tufting device which inserts the bristles in tufts into a brush back.

Embracing the picker bar is a fork having a pair of tines or arms 18 and 19 which extend along the base along either side of the picker bar. It will be noted that the notch is bottomless and hence bristles are introduced thereinto the quantity of bristles retained in the notch is determined by the position of the arms 15 and 19 of the fork relative thereto.

The left-hand end (as seen in Fig. 2) of the fork terminates in a yoke including an integral bar member 20 having a slide portion 21 vertically slidaole in a complementary formed vertical guide recess 22 in a guide member 23 upstanding from the base 16. As best seen in Fig. 2, the slide 21 is held within the recess 22 by means of a cover plate 24 secured to the guide member 23. A spring 25 has one end secured to the cover plate and has its other end secured to a bottom stop member 26 affixed to the upper portion of the slide 21, it being clear that the function of the spring 25 is to urge the slide, and hence the fork, downwardly. Means in the form of an adjustable screw 27 is provided for determin- 0 ing the lowermost position of the slide and fork, the screw upper end of the guide member 23. A rectangular, cutaway portion 31 is provided in the slide 21 in which is received a finger portion 31 of a cam element 32 secured by means of an integral split clamp 33 to a shaft 34 rotatably mounted on the frame. Means, hereinafter to be described, are provided for rocking the shaft 34 to raise and lower the slide member 31 and hence to raise and lower the fork relative to the picker bar to determine the effective depth of the slot 15. The arms at the end of the fork opposite to the slide carrying end are spread apart as indicated at 35 and 36 to permit the tufting device to pass therebetween at the bristle delivery point 37. Preferably, an adjustable stop including a bolt 38 threaded into the end of the fork and bearing against a portion 39 of the frame is provided to level the fork in its lowermost position.

Means in the form of a magazine 40 is provided for supplying bristles to the notch 15 in the picker bar as the same is reciprocated across the base of the machine. The magazine 4-0 comprises a three-sided box having a back 41 and sides 42 and 43 and is pivotally connected, through the medium of a bearing 44, to an arm 45 fastened to the vertical frame member 11. The magazine 40 is divided into two vertically elongated bristle stock boxes 46 and 47 by a dividing wall 48.

It is contemplated that one mode of employing the apparatus of this invention will include the use of the boxes 46 and 47 to contain dissimilar bristles, for example, the box 46 might contain nylon bristles to be gathered into tufts for insertion around the periphery of the brush while the box 47 may contain less expensive fiber bristles to be inserted in the center portion of the brush. The magazine 40 is pivotally or pendulously mounted on the bearing 44 to swing either of the boxes into the correct position to deliver bristles to the slot 15 of the picker bar.

To guide bristles as they are fed downwardly through the boxes, a pair of fixed guides 49 and 59 are secured to the inner portions of the side walls 42 and 43 and a pair of movable guides 51 and 52 are secured to the center wall 48. To provide for vertical movement of the guides 51 and 52, the center wall 48 is provided with a pair of vertically elongated spaced slots 53 and the guides are held in position against the wall by guide lugs 54 threadedly secured to the guides and extending into and engaging the slots. The upper portion of the walls 51 and 52 are secured together by means of a spacing member 55 through which a screw 56 extends, the screw engaging threads in the upper side of the wall 48. A spring 57 surrounds the screw 56 and has its lower end bearing against the member 55 constantly to urge the walls 51 and 52 downwardly toward the picker bar. A pair of movable walls 58 are located at the rear portion of each of the boxes 46 and 47 and are movable forwardly in the box to determine the depth so that the size of the boxes may be adjusted to accommodate various lengths of bristles. Each of the walls 58 is secured to a rod &1 extending through a boss 59 secured to the backside 41 of the magazine. The rods 58a may be clamped to the boss59 by the set screws shown when the walls have been moved to the desired position.

The magazine 40 carries a pair of brackets 60 and 61 each of which supports rods 62 carrying presserfoot portions 63 which extend into the stock boxes 46 and 47 to press bristles 64 carried in the boxes downwardly toward the picker bar. As the supply of bristles in the boxes decreases, the presser foot portions are moved downwardly under the influence of the weights 65 secured to the top ends of each of the rods 62.

In order to prevent intermixture of bristles in the boxes, a first stripper bar member 71 is movably secured to the frame and is spring loaded to urge its lower edge into contact with the upper surface of the picker bar, and is provided at its left-hand end (as seen in Fig. 2) with an upper surface 71 inclining downwardly toward the picker bar. As the magazine is pivoted counterclockwise to the position shown in Fig. 2 (in which position the box 46 is positioned to feed bristles to the notch 15 of the picker bar) the bottom of the box 47 is swung over the stripper bar 70. The inclined surface 71 contacts the lower end of the movable guide 51 to lift it so that the tip 72 of the stripper bar may extend into the box 46. As the picker bar is reciprocated to the right, the end 72 of the stripper bar serves to scrape excess bristles from the top of the picker bar to prevent their being dragged into the box 47. As the magazine is pivoted, the inclined surface 7.1 of the bar and the top surface thereof serve to lift bristles in the box 47 away from the path of movement of the picker bar so that bristles therein will not become entangled in the picker bar or in the notch 15 thereof to be intermixed with bristles from the box 46. A second stripper bar 73 is positioned on the other side of the bristle receiving point and is bifurcated, as shown in Fig. 4, to provide two arms 74 and 75 which straddle the portion 14 of the picker bar, the arms being inclined downwardly as shown. As the magazine is pivoted clockwise from the position shown in Fig. 2,

the arms 74 and 75 extend into the box 46 to lift the bristles therein out of the path of movement of the picker bar to prevent their becoming intermixed with the bristles in the box 47, while at the same time the box 47 is moved to the position shown in Fig. 2 as occupied by the box 46, thus permitting the bristles in the box 47 to rest upon the top of the picker bar.

The reciprocation of the various parts of the machine is accomplished by means of cams. One of such cams is indicated at 80, the cam being fixed to a drive shaft 81 mounted at the rear of the machine. An additional cam 82 is also mounted upon the drive shaft for accomplishing the pivotal movement of the magazine 40 and the vertical movement of the fork in synchronous relationship with the operation of the entire machine. To this end, a cam follower $3 rides upon the cam 82 and serves to operate a valve device 84 which is connected by means of the pipe 85 to a source of air under pressure, and by means of a second pipe 86 to a pneumatic piston and cylinder device 87. The piston in the device 87 is connected to a piston rod 88 which is pivotally connected to the magazine 40. A spring 89 has one end secured to the magazine and the other end secured to a fixed portion of theframe constantly to bias the magazine to the position shown in Fig. 1. An adjustable stop device 90 is provided to determine the extent of pivotal movement in this direction of the magazine, the device including a stop screw 91 threadably received in a fitting 92 secured to the base portion 18 and adapted to bear against one of the sides of the magazine. When air is admitted to the piston and cylinder device by operation of the valve means 84, the magazine is pivoted to a position bringing the box 47 to the bristle receiving point.

An arm 93 is pivotally connected at one end to the lower'portion of the magazine and is provided at its other end with a lost motion connection in the form of a slot 94 in which a bolt 95 is received. The bolt 95 is secured to a crank arm 96 in turn secured to the shaft 34 for moving the slide member 21 vertically.

By' means of the above described connections the magazine 40 may be pivoted at predetermined times in the cycle of operation of the machine to bring either the box 46 or the box 47 at the bristle receiving point. Simultaneously with pivotal movement of the magazine, the fork may be raised or lowered vertically to determine the effective depth of the notch 15. By means of this arrangement, not only may dissimilar bristles be supplied to the picker bar to be inserted in various portions of the brush, but the quantity of each type of bristles delivered may be regulated automatically with movement of the magazine. If the drilling device provided on a particular brush making machine is adapted to drill holes of different size, difierent quantities of similar bristles or different quantities of dissimilar bristles may be provided for each size hole in the brush back. Normally, the drilling device of a brush making machine is adapted to drill holes of a single size. However, where bristles of different stiffness are to be inserted in the holes, fewer stiff bristles can be inserted in a hole of a given size than soft bristles.

Thus it may be desired to supply stiff bristles for insertion around the periphery or edges of the brush, and therefore when the box containing the stiff bristles is positioned at the bristle receiving point, the fork is simultaneously raised to decrease the depth of the notch to limit the amount of bristles which it-cancontain. Where the central portion of the brush is to be tufted with softer bristles, the magazine is pivoted to bring the box containing such softer bristles to the bristle receiving point, while simultaneously the fork may be lowered to increase the quantity of soft bristles which may be received in the notch for delivery to the tufting device of the machine.

The amount that the fork is raised or lowered with rotation of the shaft 34 may be determined by adjusting the position of the crank 96 relative thereto through the split clamp shown as well as by adjusting the relation of the clamp 33 to the shaft. Through this adjustment it is possible to secure the maximum vertical movement of the fork as the magazine is pivoted or to achieve adjustment wherein no vertical movement is imparted to the fork even though the magazine is pivoted, such as would be the case where two types of bristles are to be inserted and it is desired to have the tufts of equal size. To this end either the split clamp may be loosened so that rotation of the shaft 34 does not occur or the clamp may be loosened and the shaft 34 rotated to a point where rotation of that shaft induced by pivotal movement of the magazine causes the finger 31 to move without contacting the top of the recess 30. When this condition prevails, no vertical movement of the slide 21 can take place.

It will be clear from the foregoing description that the pivotal movement of the magazine and the vertical movement of the fork may both be accomplished automatically in timed relationship to the operation of the other devices of the machine so that a minimum of attention on the part of a machine operator is required.

I claim:

1. In a brush making machine having a reciprocable picker bar having a bristle receiving notch movable from a bristle receiving point to a bristle delivering point, means for feeding bristles to the picker bar comprising a magazine having two boxes each adapted to contain a supply of bristles and movably mounted on the machine, means for moving the magazine to position either box at the bristle receiving point, and means positioned in the path of movement of the magazine for lifting bristles out of the path of movement of the picker bar, said last named means being so located on the machine as to lift the bristles in a box as it is moved away from the bristle receiving point.

2. In a brush making machine having a reciprocable picker bar movable from a bristle receiving point to a bristle delivering point, means for feeding bristles to the picker bar comprising a magazine pivotally mounted on the machine and having two vertically elongated boxes each adapted to contain a supply of bristles and each of said boxes having an open bottom through which bristles are discharged to the picker bar, and means for pivoting the magazine to position the bottom of either box at the bristle receiving point.

3. In a brush making machine having a reciprocable picker bar movable from a bristle receiving point to a bristle delivering point, means for feeding bristles to the picker bar comprising a magazine having two parallel vertically elongated boxes each adapted to contain a supply of bristles and each of said boxes having an open bottom through which bristles are discharged to the picker bar, supporting means for the magazine mounted for pivotal movement about an axis positioned at right angles to the path of movement of the picker bar and located substantially vertically above the magazine to provide a pendulum-like mounting therefor, and means for pivoting the magazine about said axis to position the bottom of either box at the bristle receiving point.

4. In a brush making machine having picker bar means movable from a bristle receiving point to a bristle delivering point, tufting means movable through the delivering point to pick tufts from the picker bar means and to insert said tufts in a brush back, and automatically operating devices for actuating said means in synchronous relationship to insert a plurality of tufts in said brush back, means for supplying dissimilar tufting bristles to the picker bar means comprising a magazine having two boxes each adapted to contain a supply of bristles of dissimilar character and movably mounted on the machine, and means operating automatically in timed relationship with said devices for positioning one and then the other of said boxes at the bristle receiving point.

5. In a brush making machine having a reciprocable picker bar movable from a bristle receiving point to a bristle delivering point, means for feeding dissimilar bristles to the picker bar comprising a magazine having two parallel vertically elongated boxes each adapted to contain a supply of bristles of dissimilar character and each of said boxes having an open bottom through which bristles are discharged to the picker bar, supporting means for the magazine mounted for pivotal movement about an axis positioned at right angles to the path of movement of the picker bar, means for pivoting the magazine about said axis to move said bottoms in an arcuate path passing through said bristle receiving point, and a pair of fixed members each provided with an inclined upper surface positioned in said arcuate path adjacent to and on either side of said bristle receiving point, said inclined surfaces being adapted to lift the bristles in a box as it is moved in said arcuate path away from the bristle receiving point.

6. In a brush making machine having a reciprocable picker bar movable from a bristle receiving point to a bristle delivering point, means for feeding dissimilar bristles to the picker bar comprising a magazine having two parallel vertically elongated boxes each adapted to contain a supply of bristles of dissimilar character and each of said boxes having an open bottom through which bristles are discharged to the picker bar, supporting means for the magazine mounted for pivotal movement about an axis positioned at right angles to the path of movement of the picker bar, means for pivoting the magazine about said axis to move said bottoms in an arcu-' ate path passing through said bristle receiving point, a pair of fixed members each provided with an inclined upper surface positioned in said arcuate path adjacent to and on either side of said bristle receiving point, said inclined surfaces being adapted to lift the bristles in a box as it is moved in said arcuate path away from the bristle receiving point and with the inclined surface on the member positioned between the bristle receiving point and the bristle delivering point terminating at its lower end immediately adjacent the top of the picker bar to strip excess bristles from said top as the picker bar moves to the delivering point.

7. In a brush making machine having a reciprocable picker bar movable from a bristle receiving point to a bristle delivering point, means for feeding dissimilar bristles to the picker bar comprising a magazine, a vertically slidable upright partition dividing the mag azine into two parallel vertically elongated boxes each adapted to contain a supply of bristles of dissimilar character and each of said boxes having an open bottom through which bristles are discharged to the picker bar, supporting means for the magazine mounted for pivotal movement about an axis positioned at right angles to the path of movement of the picker bar, means for pivoting the magazine about said axis to move said bottoms in an arcuate path passing through said bristle receiving point, a pair of fixed members each provided with an inclined upper surface positioned in said arcuate path adjacent to and on either side of said bristle receiving point, said inclined surfaces being adapted to lift the bristles in a box as it is moved in said arcuate path away from the bristle receiving point and with the inclined surface on the member positioned between the bristle receiving point and the bristle delivering point terminating at its lower end immediately adjacent the top of the picker bar and immediately adjacent the bristle receiving point whereby to raise said partition as the magazine is pivoted and to position said lower end in the box at the bristle receiving point to strip excess bristles from the top of the picker bar as said bar moves to the delivering point.

8. In a brush making machine, in combination, a horizontally reciprocable picker bar having a vertical notch to receive a plurality of bristles, a fork embracing the picker bar and having horizontally aligned tine portions extending along either side of the picker bar adjacent the slot and upon which bristles in the slot rest, and means for vertically adjusting the fork to vary the effective depth of the notch.

9. In a brush making machine having a dual movable magazine for supplying dissimilar bristles, in accordance with movement of the magazine, to a vertical notch in a picker bar mounted for horizontal reciprocation between a bristle receiving point and a bristle delivering point and automatic means for moving the magazine and reciprocating the picker bar, means for varying the quantity of bristles delivered by the picker bar comprising a vertically movable fork embracing the picker bar, said fork having a portion extending along each side of the picker bar adjacent the notch and adapted to support bristles received into the notch from the magazine, and means operated automatically with movement of the magazine for moving the fork vertically to varyv the effective depth of the notch.

10. In a brush making machine having a magazine for supplying bristles to a vertical notch in a picker bar mounted for horizontal reciprocation between a bristle receiving point and a bristle delivering point and automatic means for reciprocating the picker bar, means for varying the quantity of bristles delivered by the picker bar comprising a vertically movable fork embracing the picker bar, said fork having horizontally aligned tine portions extending along either side of the picker bar adjacent the notch and adapted to support bristles received into the notch from the magazine, and automatically operated means for moving the fork vertically to vary the effective depth of the notch.

11. In a brush making machine having a magazine for supplying bristles to a vertical notch in a picker bar mounted for horizontal reciprocation between a bristle receiving point and a bristle delivering point and automatic means for reciprocating the picker bar, means for varying the quantity of bristles delivered by the picker bar comprising a fork embracing the picker bar, said fork having a portion extending along each side of the picker bar adjacent the notch and adapted to support bristles received into the notch from the magazine, a vertically movable slide carrying the fork, automatically operated means for moving the slide vertically to vary the etfective depth of the notch, and a manually adjustable bottom stop for the slide to adjust the maximum depth of the notch.

12. In a brush making machine having a reciprocable picker bar having a vertical notch and movable from a bristle receiving point to a bristle delivering point, feed means comprising a magazine pivotally mounted on the machine and having two boxes each adapted to contain a supply of bristles and each of said boxes having a discharge opening through which bristles are discharged to fill the notch in .the picker bar, means for pivoting the magazine to position the discharge opening of either box at the bristle receiving point, a vertically movable fork embracing the picker bar, said fork having a portion extending along each side of the picker bar adjacent the notch and adapted to support bristles received into the notch from the discharge openings, and means operating automatically with pivotal movement of the magazine for vertically moving the fork to vary the effective depth of the notch.

13. In a brush making machine having a reciprocable picker bar having a vertical notch and movable from a bristle receiving point to a bristle delivering point, feed means comprising a magazine pivotally mounted on the machine and having two boxes each adapt-ed to contain a supply of bristles and each of said boxes having a discharge opening through which bristles are discharged to fill the notch in the picker bar, means for pivoting the magazine to position the discharge opening of either box at the bristle receiving point, a fork embracing the picker bar, said fork having a portion extending along each side of the picker bar adjacent the notch and adapted to support bristles received into the notch from the discharge openings, a vertically movable slide carrying the fork, and a crank arm connected to the slide and to the magazine for moving the slide with movement of the magazine.

14. In a brush making machine having a reciprocable picker bar having a vertical notch, cam means for reciprocating the picker bar to position the notch between a bristle receiving point and a bristle delivering point and drive means for rotating the cam, feed means comprising a magazine pivotally mounted on the machine and having two boxes each adapted to contain a supply of bristles and each of said boxes having a discharge opening through which bristles are discharged to fill the notch in the picker bar, a pneumatic piston and cylinder device secured to the magazine for pivoting the same to position the discharge opening of either box at the bristle receiving point, valve means controlling the supply of air to said device, a cam rotated by the drive means for operating the valve means, a fork embracing the picker bar, said fork having a portion extending along each side of the picker bar adjacent the notch and adapted to support bristles received into the notch from the discharge openings, a vertically movable slide carrying the fork, and a crank arm connected to the slide and to the magazine for moving the slide with movement of the magazine.

References Cited in the file of this patent UNITED STATES PATENTS 532,735 Kimball Jan. 15, 1895 1,467,364 Fisher Sept. 11, 1923 1,641,686 Nilsson Sept. 6, 1927 1,888,352 Lipps Nov. 22, 1932

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