Patent GB-191315964-A (GB)
Title: Machines for Sharpening Razors.
Inventor: MANN CHARLES AYTON
IPC: B24D15/08
Filed: 1913-07-10
Granted: 1914-01-29
Abstract: 15,964. Mann, C. A., and Gnoeth, E. July 10, 1912, [Convention date]. Stropping-apparatus. -A machine for sharpening razors comprises a frame or bed 1 on which is mounted a strop or a honing-stone 3, carried by a support 2 secured to the bed but tiltable transversely and held in its normal position by springs 7. A bar 8 is provided at one side of the frame and on it is slidably mounted a carriage 9 supporting the razor - holder; a roller track 10 is also provided spaced away from the frame to form a slot 12 to guide the carriage. At each end of the track is a cam 1.3 which may be set to co-operate with the holder either for honing or for stropping, a spring catch retaining the cams in either position. The carriage comprises a frame 16 with lugs 23 sliding on the rod, and having mounted therein, on a shaft 58, a gear rack 18, the lower end of which is adapted to engage the cams at the end of each stroke and thus reverse the blade-holder. The rack meshes with a pinion 19 on the pivoted razor-holder 20, which comprises a U-shaped leaf spring 21 carrying rollers 11 at its ends and a connecting-bar 24 spacing the rollers correctly, and at the bottom of the U-shaped spring is a block 25 with a pin 26 projecting therefrom and surrounded by a spring 27. Slidable on the pin and acted on by the spring is a U-shaped member 28, the ends of which engage grooves 29 in the underside of a plate 30 tiltable on pivot pins 30<1>, and carried by the plates is the razor clamping- member 31 having a pin 32 rotatable in the plate and carrying a flat spring 33 engaging one side of the plate. The clamping-member has a screw 35 and lugs 38 which secure the razor on an inclined part 37, thus causing the blade to lie diagonally of the sharpening- member, and the razor handle 42 is supported by a spring 39 carried by an extension 40 of the clamping-member. As the carriage is drawn to-and-fro by the handle 17, the rollers 11 alternately engage the track 10, drawing the blade down into contact with the sharpening- member, the tilting of the plate 30 and the yielding of spring 27 allowing of this. The razor blade is caused to engage the sharpening- member with its outer end first by means of a stop 48 having ears 49, 50 which engage the extension 40 of the clamping-member when the holder is tilted, thereby tilting the clamping- member against the action of the spring 33. When the blade engages the sharpening-member, this tilts against the action of the springs 7, thus bringing the sharpening-member into contact with the whole length of the blade-edge. The strop 51, Fig. 11, comprises a frame 52 with side flanges 53 and a flanged tapering channel 54 at each end, adapted to receive the ends of the strop and hold this over a felt pad 56. The Specification as open to inspection under Section 91 (3) (a) comprises also a modified form of razor-clamping member having four fixed jaws and one movable jaw, these jaws being inclined so as to cause the razor to lie diagonally of the sharpening-member, and the spring supporting the razor handle being adapted to have a limited rotation about its point of support. The sharpening-member is supported on springs, the ends of which are secured to the frame or bed, the middle of each spring having a struck-up bead engaging in a slot in a bead struck-up from the support of the sharpening-member. The cams at the ends of the bed are pressed by tripod springs, and the stop for producing the endways tilting of the razor blade comprises a sector-shaped member. This subject-matter does not appear in the Specification as accepted.