IMPROVED JOINERS & CABINET MAKERS BENCH KNIFE WITH DRAWBACK ACTION
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I, THOMAS JAMES SYER, Tool Maker & Cabinet Maker of 1 Finsbury Street
Chiswell Street in the Parish of St. Lukes & in the County of Middlesex do hereby
declare the nature of said Invention for IMPROVED JOINERS & CABINET MAKERS
BENCH KNIFE WITH DRAWBACK ACTION to be as follows:-
The object of my Invention is to so arrange a tool (that is now generally known
in the wood working trades as a bench knife) that will save time to the workman
& give more comfort at the same time. I have made this tool in such a manner
that when the pressure is taken off the work; the knife or arm moves automatically
with the lever or handle, backwards thus releasing itself from the work formerly
gripped by same.
I accomplish my object in the following way, I make the shifting arm (or
knife) A with a return piece at nearly right angles to same upon right hand side
of this return piece I fit a flange B overhanging same, and upon the underside of
the projecting portion of this flange I fit a pivot (or small wheel).B1 which
travels in groove C of the plate D, I make plate D in the form or shape of an.
eccentric or cam, and work same upon pivot E which latter I fix into bed plate F.
The lever or handle J is fixed permanently on plate D. The arm or knife is worked
upon pivot G which is fixed to bed plate F. Then I place the complete article
into the desired position upon bench, by placing the 2 pins that are fitted on
to the underside of bed plate & lettered H into 2 holes previously made in
bench top to receive, same; with the lever or handle J placed longitudinally over
bed plate & pointing toward * on Drawing, after which I draw back the lever or
handle J by a semicircular motion (having first placed the material to be held;
upon the bench) which in its turn revolves plate D upon its pivot E this plate D
then presses against the return piece of knife or arm A. & places this latter firmly
against the material to be held. Then to release the hold (which is the greatest
novelty of the Invention) I press forward the lever or handle J by a semicircular
motion which then not only releases the grip of the arm or knife from the material
but actually draws it away from the material a movement which to the best of my
knowledge & belief has not yet been achieved by any one else.
Having now particularly described & ascertained the nature of my said
Invention & in what manner the same is to be performed, I declare that what
I claim is that I have produced the most perfect & yet simple form of bench knife
with automatic draw back action.
Dell this th
1001

page_text: I THOMAS JAMES SYER,- Tool Dealer & Cabinet Manufacturer of 1 Finsbury
Street Chiswell Street in the Parish of Saint Lukes & in the County' of Middlesex
do hereby declare the nature of my Invention for IMPROVED JOINERS AND
CABINET MAKERS BENCH KNIFE WITH DRAWBACK ACTION and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement :-
I make the parts marked C of one piece of metal, having a slotted hole at one
end & a circular hole at other end, the slotted hole works upon pivot El in the
circular hole, I fit a triangular shaped plate covered by a circular flange plate
& marked D, which turns eccentrically upon pivot E upon this circular plate
I attach handle or lever A which when moved horizontally & in a semicircular
direction from right to left, revolves eccentrically plate D upon pivot E which in
its turn presses forward the blade C against the material to be secured and holds
the material firmly; blade C is guided forward by the slot & pivot El afore-
mentioned, Figure F is the base or bed plate & to which the whole of the working
parts are connected by the pivots E1 & E which latter are permanently secured on
top side of bed plate F two pins marked B B are also attached to under side of
bed plate F which fit into corresponding holes made in top of bench to receive
same.
Having now particularly described and ascertained the nature of my said
Invention & in what manner the same is to be performed I declare that what
I claim is,
1 The construction of a bench knife in which a drawback action is obtained, by
forming a circular ring at the end of the knife, & inserting therein a triangular
shaped plate, covered with a circular flange & moving on an eccentric pivot by
means of a handle.
Dated this 4th day of June 1884.