Bench Plugs and Cams for Holding Down the Work on Cabinet Makers' and other Benches.
Year: 1886

page_text: Date of Application, 2nd Apr., 1886.
Complete Left, 13th Dec., 1886.
Complete Accepted, 14th Jan., 1887.
Bench Plugs and Cams for Holding Down the Work on Cabinet
Makers' and other Benches.
I JOHN RAWLINGS of 188 Dalston Lane London, E, American Organ Case Maker
do hereby declare the nature of this invention to be as follows:-
It consists of two iron Plugs to drop into a series of holes bored through the top of
the Bench, one of the said Plugs having a small head serrated on one side for gripping
the work and to form a Stop against the other Plug which has a cam head, and handle
to turn the cam right or left whereby to tighten the work against the other Plug, and
hold it down firmly to the Bench whilst being operated upon. Upon the Plugs are
moveable india rubber rings or washers with set screws to hold them at the required
height most suitable for gripping the work.

page_text: Bench Plugs and Cams for Holding Down the Work on Cabinet
Makers" and other Benches.
I JOHN RAWLINGS of 188 Dalston Lane London in the County of Middlesex
American Organ case maker 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 :-
Heretofore a difficulty has arisen from the want of a quick and ready method of 5
fixing firmly wood and other matters on wood-workers benches whilst being planed or
otherwise operated upon.
By my invention I overcome this difficulty by the use of two cast iron or other
metal plugs.
Figures 1 and 2 of the accompanying drawings represent the top and side views of 1
a stop plug drawn to size.
A is a round parallel shank to which is cast the thin rectangular head B being for
the purpose of preventing the shank A from falling through the holes provided for it
in the top plank of the bench and also to form a bearing surface against which to
receive the pressure of the other plug hereinafter called the pressure plug.
.'1
One side of the head B is serrated at C to prevent the wood or other matters from
slipping from their hold and the opposite side D I make smooth for the purpose of
holding work that would be otherwise injured by the serrated side.
Figures 3 and 4 represent the top and side views of the pressure plug.
E is a round parallel shank of the same size and form as the before described stop 2
plug and is interchangeable with the stop plug and with it to work in all or any of the
holes provided for that purpose in the top plank of the bench.
F is a head provided with a cam by placing the head slightly eccentric with the
shank E and G is a handle cast thereto whereby to turn the cam right or left and so
tighten or release the wood or other articles under operation.
Thus a half turn of the handle will be sufficient to give a firm and reliable grip to
the wood or other matters subjected thereto.
2
To hold the plugs higher or lower from the surface of the bench when required I
use india rubber rings of round section H which being somewhat tightly fitted on the
shanks can be rolled by the fingers up or down and which rings will remain in the 3
same positions when so set.

page_text: my said invention
Having now particularly described and ascertained the nature of my
and in what manner the same is to be performed I declare that what I claim is
First: The construction use and application to the purpose before described of a
"Pressure plug having a cam head and handle cast thereto " substantially as set forth
and shown in the accompanying drawings.
Second-A "Stop plug having a head with serrated and smooth sides" substantially
as set forth.
Third-The use and application of "india rubber rings for holding the plugs in
the required position" substantially as set forth and shown in the accompanying
drawings.
JOHN RAWLINGS.