Year: 1887

page_text: Date of Application, 9th Feb., 1887
Complete Left, 9th Nov., 1887
Complete Accepted, 13th Dec., 1887
and in Apparatus therefor.
I, WILLIAM ALEXANDER, of Helen Street, Govan, in the County of Lanark,
Blockmaker, do hereby declare the nature of this invention to be as follows:-
My invention has for its object mainly to facilitate the operation of cutting out
wooden pulley blocks and sheaves by the use of band saws and the subsequent
planing or shaping of the blocks.
In lieu of drawing or marking upon the surface of the wooden slabs the outline
of the oval, circular or other shaped piece to be cut and guiding the slab in to the
band saw by hand which is an operation requiring considerable manipulative skill
and is extremely tedious I guide the slabs or blocks during the cutting operation
by mechanical devices, skilled labour being dispensed with and the cutting operation
being effected in very much less time.
In forming the side pieces of pulley blocks I secure the wooden slab or two or more
slabs to a metallic or other plate having in it a groove or on it a ridge corresponding
in form to the outline to which the slab or slabs is or are to be cut, and on the
bed or table of the hand sawing apparatus I fix a pin which may be adjustable and
have upon it a friction roller adapted to fit the groove or to bear against the ridge
on said plate. I then simply press forward the plate and slabs in the path of the saw
which cuts the slabs to the oval or other form corresponding to that of the groove
or ridge referred to.
In forming sheaves I bore a centre hole in the piece of wood and pass the wood
over a guide pin at a suitable distance from the line of the saw and turn the wooden
slab upon the centre pin the saw cutting the slab to a circular form.
After the pulley block is formed in the rough state I plane or shape it and round
off the edges by means of rotating discs or cutters which are on fixed centres the
block being guided to bring its rough edges into the line of the cutters by means of a
grooved or ridged guide plate or similar device passed over a guide pin or the like.
Dated this Eighth dox of Ruhruary 1887
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow,
Agents.

page_text: I, WILLIAM ALEXANDER of Helen Street Govan, in the County of Lanark,
Blockmaker, 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 :-
-
My invention has for its object mainly to facilitate the operation of cutting out
wooden pulley blocks and sheaves by the use of band saws and the subsequent planing
or shaping of the blocks.
In lieu of drawing or marking upon the surface of the wooden slabs the outline of
the oval, circular or other shaped piece to be cut and guiding the slab in to the band
saw by hand which is an operation requiring considerable manipulative skill and is
extremely tedious I guide the slabs or blocks during the cutting operation by
mechanical devices skilled labour being dispensed with and the cutting operation being
effected in very much less time.
In the accompanying drawings figures 1, 2 and 3 are respectively a side elevation,
an end elevation, and a plan, representing in outline a band sawing machine as fitted
with a modification of the devices employed in carrying out my invention, and
figures 4 and 5 are an inverted plan and edge view of the guide plate A hereinafter
referred to and which in the present instance is of oval formation and adapted for use
in the manufacture of oval shaped pulley blocks.
In forming the side pieces of pulley blocks I secure the wooden slab or two or more
slabs to a metallic or other plate A having in it a groove a or jon it a ridge, corre-
sponding in form to the outline to which the slab or slabs is or are to be cut and on an
adjustable slide piece I fitted in the bed or table B of the band sawing apparatus or in
an adjustable plate B' on the table I fix a pin or pins & adapted to fit the groove a in
the plate A or to bear against the ridge on said plate which is laid on the table with
the grooved face over the pins. I then simply press forward the plate A with the
slabs in the path of the saw C which cuts the slabs to the oval or other form corre-
sponding to that of the groove a or the ridge referred to.
In forming sheaves I bore a centre hole in the piece of wood and pass the wood
over a guide pin which corresponds to one of the pins shown in the drawing the
said pin being adjustably fitted at a suitable distance from the line of the saw and I
turn the wooden slab upon the centre pin the saw cutting the slab to a circular form.
After the pulley block is formed in the rough state I plane or shape it and round
off the edges by means of rotating discs or cutters which are on fixed centres the block
being guided to bring its rough edges into the line of the cutters by means of a grooved

page_text: or ridged guide plate or similar device passed over a guide pin or the like in the
manner hereinbefore described as applied to the cutting of the side blocks.
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. The manufacture of pulley blocks in the improved manner and by means
substantially such as are hereinbefore described.
2. In the manufacture of pulley blocks the method and means hereinbefore
described for cutting to the required form the slabs or pieces composing the blocks.
3. The method and means hereinbefore described of cutting sheaves for pulley
blocks.
Th
Arab: 199
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow,
Agents.