Improvements in Leather Shaving Machines.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Leather Shaving Machines.
I, SAM HALEY, of the Firm of Thomas Haley & Co., of Bramley, near Leeds,
in the County of York, Machine Makers, do hereby declare the nature of this
invention to be as follows:-
This invention relates to machines for shaving skins and leather, and this is
effected by forcing the said leather against a revolving cutter. This revolving
cutter is composed of knives arranged spirally on a barrel and between each
knife, a deep groove or recess is formed. This cutter revolves at a high speed,
causing a vacuum to be made or formed in the grooves, and in shaving tender
skins, the vacuum causes them to stick or adhere to the said cutter whereby the
skin is taken around which is objectionable, because it invariably destroys the
skin and breaks the emery grinding wheels. To prevent this I cause a blast or
current of air to be blown on to the cutter, which air enters the grooves, conse-
quently a vacuum cannot be formed, whereby the most tender skin can be shaved
without sticking to the cutter, in addition to which, the skin, after being shaved,
is blown away from the cutter.
The blast or current of air may be conducted to the cutter in any suitable or
convenient manner.
improvements in Leather Shaving machines,
I, SAM HALEY, of the Firm of Thomas Haley and Company, of Bramley, near
Leeds, in the County of York, Machine Makers, do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement: —
This invention relates to machines for shaving skins and leather, and this is
effected by forcing the said leather against a revolving cutter. This revolving
cutter is composed of knives arranged spirally on a barrel and between each
knife a deep groove or recess is formed. This cutter revolves at a high speed,
causing a partial vacuum to be made or formed in the grooves, and in shaving
tender skins, this partial vacuum causes them to stick or adhere to the said cutter
whereby the skin is taken around, which is objectionable, because it invariably
destroys the skin and breaks the emery grinding wheels.

page_text: Such being the nature and object of my improvements in machines for shaving,
whitening, and buffing leather, I have appended the annexed sheet of drawings
illustrative thereof, wherein:
Fig. 1 is a side elevation of a part of a leather shaving machine and Fig. 2
end elevation of same. a represents the framework of the machine, and b the
main driving shaft. c is a revolving cutter which is composed of knives or blades
arranged spirally, and between each blade or knife is a deep recess. d is a roller
mounted at the upper end of a lever arm e fulcrummed at f. This lever arm e is
operated by the workman putting his foot upon the treadle 7 working upon the
fulcrum h which through the intervention of the arm i causes the lever to
rock upon its fulcrum f forcing the roller d, together with the leather, against
the revolving spiral cutter c, whereby the leather is shaved. In practice I find
that a partial vacuum is formed in the spaces between the blades of the spiral
cutter, and to prevent this, I cause a blast or current of air to be blown on to
the said cutter, which air enters the grooves in the said spiral cutter; conse-
quently a vacuum cannot be formed, whereby the most tender skin can be shaved
without sticking to the cutter. To effect this object I employ a fan 1, mounted
on the shaft m, having four or other number of wings or blades and as the
fan revolves, a current of air is created and forced up the stationary trunk o, such
said air impinging against the revolving cutter c, whereby a vacuum cannot be
formed between the cutters, consequently preventing the leather or skin from
adhering to said cutter, as is now the case; in addition to which the leather or
skin after being shaved, is blown away from the cutter by the blast of air blown
thereon.
The blast or current of air may be produced or compressed and conducted to
the cutter in any other suitable or convenient manner. The fan is made to
revolve by means of a strap ? passing around a pulley s, on the axle m of the
fan shaft. 9 represents emery wheels or discs for sharpening the blades on the
revolving cutter c.
The upper end of trunk o is suspended by metal strap u, hinged at w, the said
metal strap passing around a stationary bar or rod x.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
(1) In machines for shaving, whitening, and buffing leather or skins, the com-
bination therewith of a fan 7 for forcing air against the revolving cutter c in the
manner substantially as herein shewn and described.
(2) In machines for shaving, whitening, and buffing leather or skins, the com-
bination therewith of a revolving fan, together with a trunk o for conveying
atmospheric air (under pressure) to the revolving cutter, all arranged substan-
tially as herein shewn and set forth.
(3) In machines for shaving, whitening, and buffing leather or skins, the use
and employment of a blast or current of air, created or produced in any suitable
manner, and conducted to the cutter, for purposes described herein.
Dated this 31st day of October 1899.
TASKER & CROSSLEY,
Patent Agents, Halifax, Agents for Applicant.