US1913863A

US1913863A - Brush holder for brush-making machines

Info

Publication number: US1913863A
Application number: US338978A
Authority: US
Inventors: Leonard B Terhune
Original assignee: DuPont Viscoloid Co
Current assignee: DuPont Viscoloid Co
Priority date: 1929-02-11
Filing date: 1929-02-11
Publication date: 1933-06-13
Anticipated expiration: 1950-06-13

Description

June 13, 1933. 1 B. TERHUNE 1,913,863

BRUSH HOLDER FOR BRUSH MAKING MACHINES Filed Feb. 11. 1929 4 Sheets-Sheet l INVENTOR Z Zm Md Mm ATTORNEYS June 13, 1933.

4. 544 L a. J M 11M Filed Feb. 11. 1929 HOLDER FOR BRUSH MAKING MACHINES 4 Sheets-Sheet 2 June 13, 1933. L. B. TERHUNE BRUSH HOLDER FOR BRUSH MAKING MACHINES Filed Feb. 11, 1929 4 Sheets-Sheet 4 INVENTOR QTMLA BY m ATTORNEY Patented June 13, 1933 UNITED STATES PATENT" OFFICE LEONARD B. TERHUN'E, OI NEWARK, NEW JERSEY, ABBIGHOB TO D'U ION! VISGOLOID COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OI DELAWARE BRUSH HOLDER FOB BRUSH-[LING IAGHIHES Application filed February 11, 1928. Serial Io. 388,978.

My invention relates to brush-making machines desi ned to insert tufts of brlstles into brush blan s, and relates more particularly to the mechanism for holding and moving the brush blanks for that purpose.

The object of my invention is to provide a brush holder mechanism adapted to hold in position, in succession, a series of brush blanks of any desired type for they accurate drilling of the brush blanks and 1nsert1on of the bristles in tufts into the same. The object of my invention particularly 1s so to construct the brush holder mechanlsm as to enable a given speed of operation to be mamtained. Previously, brush holders have been so arranged as to require the movement of the entire holder of a series of brush blanks for each movement of a particular brush blank while being re-positioned for drilling and filling of the successive holes in each lank. Because of the tremendous inert1a -of the holder and attached parts, including the brush blanks, there has been, accordlngly, a very decided limitation in the speed that could be attained. Also, because of the extremely rapid succession of movements of i the brush holder there was a limit on the speed with which brush blanks could be fed to the holder. In accordance with my 1nvention I so arrange the holder that while a single given blank is being drilled and filled this blank alone is moved from one hole to another thereof for a given series of holes, while the remainder of the holders remains stationary until a new series of holes 1s to be drilled or filled, or a new brush blank is to be brought into position for drilling or filling. This enables the movement of the particular brush blank to be speeded up far beyond what was previously posslble and also enables the brush blanks to be fed continuously to the holder much more rapidly than hitherto was possible, and enables the feeding of the blanks to be carried out mechanically and automatically. In order to further save time and enable greater speeds of operation to be attained, my mechanism is so constructed as to permit repalrs or adjustments to various other parts of the machine while the particular part of the ma chine containing the blank being drilled or filled is in operation, without shutting down the latter entirely. This constitutes a'distinct source of time economy as the periodic shutting down of the whole machine is obviated. his construction, furthermore, permlts a much more accurate positioning of the brush blank while it is being drilled and filled, inasmuch as only the immediate arts for supporting the particular brush lank need be ositioned or adjusted prior to drilling or lling. For the same reason it becomes posslble, therefore, in my machine to repeatedly drill the same hole to different depths or to accurately ream a hole that has already been drilled, when the brush blank is moved to successive positions for successive drilling or reaming. Another object is to move the brush blank forward to the nozzle by a pin which at the same time centers the brush blank. Again, this entire series of operations is rendered feasible by locating the brush blanks on a disk-holder for individual radial movement thereon, devices being provided for bringing the individual hole to be drilled or filled accurately into its proper position, notwithstanding the relative positions of the lines of holes 1n a particular blank, which lines of holes may be parallel, curved or convergent, and notwithstanding the radial movement of the blank as a whole, on a single radial line passing through the center of the blank.

My apparatus is designed for use with a stationary drill of any desired type, and a stationary filling nozzle, such, for example, as is shown in the patent to Gene upon Apparatus for inserting and fixing the bristles of brushes, No. 378,130, granted February 21, 1888.

While my invention is capable of embodiment in many different forms, by way of of my invention in the accompanying drawings, in which- Fig. 1' is a front elevation showing the brush holder;

Fig. 2 is a vertical section through the same;

.illustration I have shown only certain forms Fig. 3 is a diagrammatic view of the cycles of operation on a disk-holder;

Fig. 4 is an elevation of a spring plunger used as a pawl; and

Fig. 5 is a rear view of the brush holder mechanism.

In the drawings, 1 have shown a main shaft 1 carried in a frame 2, which shaft has con nected thereto means for driving the same at any desired speed from any suitable source of power. Surrounding, the shaft 1 there is provided an annular disk-shaped brush blank holder 5 adapted to receive a, succession of brush blanks 6, as, for example, tooth brush blanks, which may be continuously fed thereto by hand, or otherwise, at the periphery of the holder at the point marked 7 in Fig. 3, the arrangement being such that the completed brushes, after drilling and filling, are continually removed from the holder at the point 8 immediately in advance of the point 7 referred to. As will he noted from Fig. 1, each of the brush blanks 6 occupies a different position with regard to the center of the disk 5, each being located on its own individual radius thereon. Each of the brush blanks 6 is supported in the holder 5 upon a movable carriage 9 which is provided with projections 9a, 9b to fit around the ends of and tightly hold the brush blank in place while being operated on for drilling or filling. The carriage 9 is supported by two

links

10 and 11, by means of a ball and socket joint 12, and pivot 13 allowing a certain amount of lateral play between the lever 11 and said pivot 13 to secure the accurate positioning of the carriage 9. The positioning of the carriage 9 is accomplished by means of a pin 14 pro ecting from the frame, and having a point 15 with a very acute angle at the point of the pin 14 to accurately fit within each one of a series of countersinks 16 of substantially the same shape as the face of the brush blank 6, in the rear face of the carriage 9, one of said countersinks 16 being provided for each of the holes to be drilled and filled in the brush blank 6. This pin 14 is normally held in retracted position by a spring 15a, cooperating with a shoulder 15?) thereon, and the pin is moved forwardly by a plunger 150 thereon, having an interposed spring 1503, which is moved by an adjusting pin 15e contacting with said plunger. It is by this means that the brush holder 9 is pushed forward to the drill 15f or instead the lilling nozzle. A spring-pressed plunger 17 having an obtusely shaped point 18, fits also in a similar series of countersinks 19 for roughly holding the carriage in its position between the intervals of accurate adjustment by the point 15 and while the blank on the carriage is not being operated on for drilling and filling. Said plunger 17 is supported in a sleeve 20 forming a part of a sliding frame 23 to which levers 10 and 11 are secured by pivots 21 and '22, which frame is carried on a. pin 24 projecting forwardly from the blank holder 5. A spring retracted guiding rod 25, furthermore, is provided with a connecting pin 26, secured in an opening 27 in the sliding holder 20 for guiding and supportingthe same. A spring 27a provides the plunger 17 with a light forward pressure at all times. The carriage 9 is brought into its initial position for the drilling or filling of the first hole thereof by means of a cam 28 which is secured to the hub of a counter shaft 28a, said cam 28 having a cam surface 29 for cooperating with a roller 30 011 an arm-31 carried by a sleeve .32 which has a flange 33 engaging with yokes34 on bell crank levers 35, which are pivoted to the main frame and carry yokes 36 having releasable engagement with rollers 37 attached to the inner end of the carriage 9. The releasable movement referred to is due to the open yokes 36 in which the rollers 37 are received; This permits the disengagement of those of the blanks not being operated upon-at any time so as to contribute to the maintenance of and the continued operation of the machine. It will be noted that a spring 38 located between the inner end of the sleeve 32 and the frame 1 keeps the roller 30 in contact with the cam 28. This cam 28 is moved by a ratchet wheel 39 on the shaft 28a, which in turn is moved by a pawl 40 on a lever arm 41, having a loose connection, by a link 42 to a reciprocating frame 43 supported by a sleeve 44 on the shaft 1 inside of the sleeve 32. A cam 45 on the main shaft 1 contacts with a roller 46 on the reciprocating frame 43- so as to move the same at the proper intervals, thereby rotating the cam 28 and moving the frame 43, which carried the adjusting screws 15c so as to move the points 14 forwardly and in turn bring the brush holders 9 up to the drills and nozzles. This reciprocating frame 43 also has arms 47 for insuring the retraction of the guiding rods 25 to their initial position, thus definitely positioning the brush blank holders 9 initially.

In order to rotate the disk-shaped holder 5 from one row of holes to another, and from one blank to another, the latter carries a circular rack 48, adapted to slidably interlock with the main frame 2, having teeth 49 corresponding to the movements from one row of holes to another and from one blank to another. As shown in Fig. 4, a spring pressed plunger 50 is provided for moving the rack 48 which is carried on a bell crank lever 51 supported on a pivot 52 located on the main frame 2, the other end of which lever has a projection 53 adapted to be operated by two

long projections

54 and 55 and four

short projections

56, 57, 58 and 59 on the ratchet wheel 39.

As will be seen from Fig. 3,.the cycle of operations may be arranged in a number of different ways. For example, they may be ar-.

eration at the top of the point 60 and a filling operation at 61. If desired, however, these operations may be added to by having an additional filling operation at the point 62 and an additional filling operation at the point 63, additional loading and unloading operations being provided at

points

64 and 65,.respectively. Again, if desired, successive drilling operations may be provided for in the same holes for each filling operation, and for this purpose additional drilling operations may be provided at points 66 and 67 In addition,

there may be introduced reaming operations 68 and 69 for the holes that have been already drilled and prior to filling. For these additional operations additional stationary drilling, filling and reaming devices would be provided at the points indicated and the mechanism for shifting the particular blank from hole to hole therein already described for the movement of the particular blank, may be duplicated opposite each of the drilling, reaming and filling points referred to.

While I have described my invention above in detail I wish it to be understood that many changes may be made therein without departing from the spirit of the same.

I claim:

1. A brush holder mechanism comprising a holder for a series of brush blanks and movable means for shifting the position of an individual brush blank for successive drilling or filling thereof without the movement of the holder and moving the holder in the same direction for the successive brush blanks to bring each successive brush blank in substantially one plane and movable means for shifting the position of an individual brush blank for successive drilling or filling thereof without the movement of the holder and moving the holder in the same direction 3. A brush holder mechanism comprising a rotatable holder for a series of brush blanks and means for supporting and moving the individual brush blanks radially thereon with regard to the axis of the rotatable holder for successive drilling and filling thereof wit out the movement of the holder.

4. A brush holder mechanism comprising a rotatable holder for supporting a series of brush blanks in substantially one plane and means for supporting and moving the individual brush'blanks radially thereon with regard to the axis of the rotatable holder for successive drilling and filling thereof without the movement of the holder.

5. A brush holder mechanism comprising a rotatable holder for a series of brush blanks and means for supporting and moving the individual brush blanks radially thereon with regard to the axis of the rotatable holder for successive drilling and filling thereof, said blanks being adapted to have a plurality of series of holes to be drilled and filled while in the holder, and means for accurately positioning the individual blanks for successive drilling and filling so that'each of the series of holes will be drilled and filled on a single radius of the holder.

6. A brush holder mechanism comprising a rotatable holder for a series of brush blanks .and means for supporting and moving the individual brush blanks radially thereon with regard to the axis of the rotatable holder for successive drilling and filling thereof, said blanks being adapted to have a plurality of series of holes to be drilled and filled while in the holder, and means for accurately positioning the individual blanks for successive drilling and filling so that each of the series of holes will be drilled and filled on a single radius of the holder, including a preliminary centering device and a secondary accurate centering device capable of displacing the position of the first centering device.

7. A brush holder mechanism comprising a holder for a series of brush blanks, movable means for shifting the position of an individual brush blank for successive drilling and filling thereof without the movement of the.

holder, and means for bringing the brush blanks in succession into their initial position for drilling and filling of the first holes to be drilled and filled thereon, respectively, the first-mentioned means being so constructed as to be disconnectable from its shifter at a time when the drilling and filling is not taking place in the operation of the individual holder.

8. A brush holder mechanism compr sing a holder for a series of brush blanks and movable means for shifting the position of an individual brush blank forwardly towards a stationary revolving drill and a stationary nozzle for successive drilling and filling thereof Without the movement of the holder.

9. A brush holder mechanism comprising means for holding a series of brush blanks and means for moving one out of a group of the series of brush blanks with regard to the holder itself during the drilling and fill: ing of the successive holes therein.

10. A brush holder mechanism comprising means for holding a series of brush blanks and means for moving one out of a group of the series of brush blanks with regard to the holder itself during the drilling and filling of the successive holes therein, said series being'comprised of a plurality of such groups and means for simultaneously drilling and simultaneously filling one black of each of said groups respectively simultaneously.

11. In combination, a brush blank holder and means for moving the same forwardly for carrying out an operation on the blank, including a pin adapted for both the centering of the blank for said operation and moving the same forwardly for effecting the operation.

12. In combination, a brush blank holder and means for moving the same forwardly for drilling the blank, including a pin adapted for both the centering of the blank for said drilling and moving the same forwardly for effecting the drilling.

13. In combination, a holder for carrying a series of brush blanks in substantially one plane, a brush blank supporting device thereon and means for moving the supporting device forwardly for carrying out an operation on the blank, including a pin adapted for both the centering of the blank for said operation and adapted for moving the same for-, wardly for effecting the operation.

14. In combination, a holder for carrying a series of brush blanks in substantially one plane, a brush blank supporting device thereon and means for moving the supporting device forwardly for drilling the blank, including a pin adapted for both the centering ing of the blank for said drilling and adapted for moving the same forwardly for effecting the drilling.

15. In combination, a holder for carrying a series of brush blanks in substantially one plane, a brush blank supporting device thereon and means for moving the supporting device forwardly for carrying out an operation on the blank, including a pin adapted for both the centering of the blank for said operation and adapted for moving the same forwardly for effecting the operation, the construction being adapted to permit the individual blank to be moved forwardly independently of the movement of the holder for the series of brush blanks.

16. In combination, a holder for carrying a series of brush blanks in substantially one plane, a brush blank supporting device thereon and means for moving the supporting device forwardly for drilling the blank, including a pin adapted for both the centering of the blank for said drilling and adapted for moving the same forwardly for effecting the drilling, the construction being adapted to permit the individual blank to be moved forwardly independently of the movement of the holder for the series of brush blanks.

In testimony that I claim the foregoing, I have hereunto set my hand this 29th day of January, 1929.

LEONARD B. TERHUNE.

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