Patent GB-190923232-A (GB)
Title: Improvements relating to Pencil Sharpeners and the like.
Inventor: STANLEY ANNETTE MARIE
IPC: B43L23/00
Filed: 1909-10-11
Granted: 1910-08-18
Abstract: 23,232. Stanley, A. M., Stanley, W. M., and Stanley, R. Oct. 11. No Patent granted (Sealing fee not paid). Pencil - sharpeners. - Relates to pencilsharpeners of the concavely-cutting type as described in Specification 15,258/08. The cutter 2 is clamped between flanges on a rotatable spindle 3 mounted in bearings which may be adjustable both laterally and longitudinally in a frame 1, the longitudinal motion being effected by a screw 12 which engages an extension 10 on a slidable bush 8 and is attached to a crankhandle 13, which is preferably springy and engages a notched quadrant 14. The bush 8 is divided for removal of the cutter 2; the head of a pin 16 limits the forward feeding of the cutter. The pencil-holder comprises a hollow bush 23 sliding in a guide 22 and in a recess in the frame 1, the bottom of both the bush 23 and the recess being preferably conically shaped. The pencil is held in a headed grip 29 threaded to engage the bush 23, whereby it can be adjusted in the bush to grip or release the pencil by the action of inclined faces 25 on the inside of the bush 23 and on the ends of the split tongues 31 on the grip 29. The bush 23 is rotated by a bevel-wheel 21 having a feather 27 engaging a groove in the bush, the wheel 21 being engaged by a bevel-wheel rotated from the spindle 3 by chain and sprockets 17, 18, 19. The pencil is inserted in the grip 29 which is held still by the head 30 while the cutter is rotated till the pencil is gripped, after which continued rotation of the cutter effects sharpening with or without forcible depression of the head 30 against the action of a spring 28 bearing on a flange of the bush 23. The point of the pencil rests in a gapped conical hole 34 in a support 32 horizontally slidable in a socket 33 in the frame 1, a hooked catch 38 retaining the support in position. A modified form of support is, in addition, adjustable vertically by attaching a separate socket by a threaded pin and nut to the frame 1. Figs. 10 and 11 show an automatic form of pencil-holder, the grip 29 being omitted for clearness. The bush 46 is threaded .for engagement by a pair of segmentally-threaded blocks 47, which are held in engagement with the bush to cause its advance when it rotates by rods 50 which are staggered as shown so as to move the blocks radially outwards when the sharpening is completed. The rods 50 slide under the action of springs 60 bearing on a bridge-piece 56 uniting the rods 50 when released by a catch 58 actuated by the flange of the bush 46. The blocks 47 have sufficient vertical play to enable them to engage the threaded bush 46 in any position. The cutter may be built up of a number of disks arranged with their teeth staggered and held together by side plates backed by collars on the spindle, a pin passing through the plates and disks, lateral adjustment of the cutter being provided by threading one end of the spindle and forming keyways thereon, whereby a circumferentially grooved collar forming a bearing with a forked bracket can be fixed at various positions on the spindle. A further form of cutter comprises two serrated disks which can be interchanged when their middle cutting corners are worn. A tray for parings is provided and the machine is steadied by a member 40.