A Scissor Sharpener.
Year: 1895

page_text: Date of Application, 19th Sept., 1895
Complete Specification Left, 19th May, 1896-Accepted, 12th Sept., 1896
A Scissor Sharpener.
1, JAMES DAWSON of 15 Bridge Street Partick, Glasgow in the County of
Lanark N.B. Blacksmith do hereby declare the nature of this invention to be as
follows:-
This invention relates to a scissor sharpener. It consists of a block of wood say
one inch square and say four inches long and a die of cast steel with a sole plate on
the bottom. The cast steel die is say th of an inch thick and say in. broad and
say 2 inches long. This die is run through a slot cut the whole length of the wood
exactly in similar dimensions as the cast steel die so as to keep the die perfectly
firm when in use. After the die has been put in its place in the slot at the bottom
of the instrument, a sole plate is screwed on to strengthen the whole and ensure the
die being kept perfectly steady when in use. When the die becomes worn at all
all that is necessary is to insert some fine instrument in the slot and move the die
along. The die may be reversed also by screwing off the sole plate. At an inch
from the right hand end of the instrument a slanting gap is cut in the wood slanting
from right to left at say about 40°. This said gap is carried down till the edge of
the die is seen and then stops at say about a 16th of an inch below the die allowing
enough room for the edge of the scissor to grip the die. At right angles to the
said gap is a slot say an inch wide and carried for say inch into the wood
continued, at the same angle of say about 40°, down to the bottom of the wood an.l
sole-plate running within an 8th of an inch of the cast steel die. This slot is made to
allow the blade of the scissor to be sharpened from immediately next the rivet
joining the blades, whereas if there was no slot the rivet would not allow the blade
close enough to the die.
When sharpening blade of scissors open them as far as possible and place one
blade in the slanting angular gap keeping it at the same time both resting slightly
on the die and pressing up against the upper ledge of the gap. Then pull gently
along keeping the blade in the said position. After repeating this motion several
times the blade will be found to be sharpened then repeat same motion with the
other blade till sharp.
If the scissors used are large, (as tailers scissors), the instrument may be made
larger in the given proportions.
1000
COBIT LEIE DI BUITICATIVA.
A Scissor Sharpener.
JAMES DAWSON, late of 15 Bridge Street, now of No. 77 Dumbarton Road,
Partick, Glasgow, Scotland, Blacksmith do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
0 described and ascertained in and by the following statement :-
This machine consists of a hardwood block 4 inches long 14 inches wide and

page_text: 1 inches deep, or thereby grooved on the underside to receive a steel cutter which
is kept in position in the groove by means of a hardwood slip screwed on the
underside of block, forming a sole.
A gap is cut on the top side of block, bevelled to suit the angle of scissor blade,
deep enough to allow the blade to come in contact with the cutter, and wide enough
to admit a blade of any thickness.
A gap is also cut in the side of the machine to allow the cutter to operate on the
blade as close up to the joint of scissors as possible.
The cutter is of specially hardened steel and is hollow ground and sharpened on
two edges. It is made portable, and may be moved along or taken out and reversed
as required, by unscrewing the sole.
Fig. of the drawing represents the top of the machine, Figs. 2 & 4 the two
sides, Fig. 3 the bottom and Figs. 5 & 6 the two ends.
In the various figures A B C D represents the block and e. f. g. h. the sole,
c. d. is the groove in which is placed the cutter i k l m, of which a. b. is the exposed
cutting edge. The sole is fixed on, and the cutter kept in position by means of the
screws n. o. p. g. r.
To sharpen scissors the machine is held firmly on the table or bench with the
left hand, the side gap towards the operator, and with the right the blade of the
scissors is drawn across the edge of the cutter several times from joint to point.
The bevelled side of gap forms a guide against which the flat side of scissors blade
should be held while being drawn along.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed 1 declare that what I
claim is
A hollow ground cutter of specially hardened steel sharpened on two edges and
'enclosed in a block of hardwood or other suitable material of the dimensions
specified or thereby, for sharpening scissors by planing'the blade.
Dated this 18th day of Max 1896.
JAMES DAWSON.