Patent GB-353532-A (GB)
Title: Improvements in and relating to machines for the manufacture of brushes
IPC: A46D3/06
Filed: 1930-04-30
Abstract: 353,532. Brushmaking machines. BRITON BRUSH CO., Ltd., Wymondham, Norfolk, and PAGE, E. B., St. Ann's, Willingdon, Eastbourne. April 30, 1930, No. 13320. [Class 19.] In a machine for drilling and filling brush stocks simultaneously, pairs of pivoted work holders a .. d, Fig. 2, are provided which can be moved together from the loading to the operating position, whereby the machine can be run continuously without stopping to change or renew the stocks by hand. The brush stocks are moved to and from boring and filling tools d<1>, f<1>. The work holders a, b, care pivoted in parallel on vertical pivots e, f and are formed integrally or connected together rigidly at an angle to one another. The brush stocks are changed in the extreme positions of the work holders away from the tools while the tools are operating. The work holders are mounted on a reciprocating table h, Fig. 1, and are capable of pivotal movement about a horizontal shaft h<1> and also about the pivots e, f so as to give spread. The horizontal movement of the table h towards the operating tools is controlled by a cam k rotating on a shaft k<2> and operating, through a roller k<8>, a spring-pressed lever k<3> pivoted at k<4> to a main frame m. The lever k<3> has a bell-crank arm k<9> to which another lever k<11> is pivoted. The lower end of the lever kll is reciprocated by a rod k<12> from the power shaft of the machine so as to feed the stocks to the tools. The upper end of the lever k<11> is connected by a pivot and adjusting screw k<14> to a bracket k<16> forming part of the table h carrying the brush ho'ding and tilting mechanism. The position of the fulcrum of the lever k<11> determines the position of the brush stocks relatively to the tools d<1>, f<1> and the compensating cam k is shaped accordingly. The horizontally-sliding table h carrying the shaft h<1> has a supporting rod h<15> sliding in bearings h<16> carried on the frame of the machine. The step-bystep angular movement of the work holders about the shaft h<1> to give spread is obtained by an arm h<2> extending from the supporting member h<3> carrying the horizontal and vertical pivots h<1>, e. The outer end of the arm h<2> has a roller h<3> working in a slot h<6> in a vertical slide h<7> moving in bearings h<8> &c. fixed on the main frame. A slide h<11> carrying a roller h<12> is guided in a cam groove h<13>. The undulations of the cam groove h<13> cause the roller h<12> to move the slotted slide h<6> vertically and so tilts the stock holders about the horizontal pivot h<1>. Lateral spread is effected by a horizontally-moving rod a<3>, Fig. 2, operated by a rocking lever h<20> pivoted at h<21> to the main frame and carrying a roller h<22> engaging a drum cam h<23> mounted on the shaft k<2>. The free end of the lever h<20> is connected by an arm h<25> engaging a slotted member a<10> on the rod a<3>. The table h can be locked by a notched wheel r, Fig. 1, engaging a pivoted spring catch r<1> movable bv hand or otherwise. The invention is also applicable to machines in which the tools move towards the table, which is stationary except for pivotal movement.