Year: 1886

page_text: I, JAMES GRANT, of 777 Walker New Road, Newcastle-upon-Tyne in the County
of Northumberland, Builder, do hereby declare the nature of this invention to be
as follows:-
The object of my Invention is to perform the operation of "tenoning" without
the great waste of material and loss of time that occurs with the use of machines
as ordinarily constructed for this purpose.
In carrying out the device or contrivance according to my Invention, I use a
frame, of iron or other suitable material, which is provided with, at its upper
extremity, a suitable arrangement for attaching said frame to the " driving rod" of
a morticing machine, or other machine of similar construction, where the movement
is vertical, and the machine generally, is suitable for the purpose.
The frame, as aforesaid, carries a pair of adjustable saws, which are arranged
within it, in a direction parallel to its longest dimension and by means of suitable
nuts and screws, the distance between sait saws may be regulated at will, to suit
the requirements of the operation of "tenoning."
Said saws are also provided with a proper arrangement for maintaining the
requisite degree of longitudinal tension upon them.
t
also provide a guide plate which is so constructed as to be easily attached to
the base of the morticing, or other machine before-mentioned. The object of this
guide plate is to form a perfectly steady guide for the saw frame during its
reciprocating vertical motion and also to maintain the "cut" of the saws in a
direction parallel to the 'fence" of the machine The work that is to be
"tenoned" is screwed tightly against the "fence," and is then brought forward
toward the saws, which are at the same time moved vertically, upwards and down-
wards, with the frame carrying them by the lever of the machine-A self-feeding
arrangement as usually applied to wood-working machines of this description
may be utilised for automatically feeding the work toward the saws as aforesaid.
The application of saws to a machine for the purpose or purposes herein before
described, constitutes the novelty of the contrivance or device according to my
Invention and the waste of material incidental upon the use of a wide tool as
Din 077

page_text: usually employed for this purpose, is entirely obviated, and the pieces that are
cut out in forming the "tenon," or "tenons" are of a serviceable shape for packing
or wedges, instead of chips as in the machinery heretofore used for the purposes
herein before described.
Also, the work may be completed with one setting, thus saving the time that is
wasted in refixing when the ordinary apparatus is used, as the full stroke of the
machine may be practically utilised.

page_text: Improved Method of Tenoning and Apparatus therefor.
I, JAMES GRANT of 777 Walker New Road Newcastle-on-Tyne in the County of
Northumberland, Builder do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
The object of my Invention is to perform the operation of Tenoning without the
great waste of material and loss of time that occurs with the use of machines as
ordinarily constructed for this purpose.
In carrying out the device or contrivance according to my Invention I use a
frame which is provided at its upper extremity with a suitable arrangement for
attaching said frame to the driving rod of a mortising machine or other machine
where the movement is vertical and is otherwise suitable for the purpose.
The frame aforesaid carries a pair of adjustable saws which are arranged in a
direction parallel to and within the frame and by means of nuts the width of the
saws may be adjusted to suit the requirements of the operation.
The saws are also provided with a suitable arrangement for maintaining a proper
degree of tension upon them.
I also provide a guide-plate which is so constructed as to be easily attached to
the base of the mortising or other machine as before mentioned; the object of
this guide-plate is to form a guide for the saw-frame in its reciprocal vertical
motion and also to maintain the cut of the saws in a parallel direction to the
fence.
The work that has to be tenoned is screwed tightly against the fence, and is
then brought forward toward the saws which are moved vertically upwards and
downwards with the frame carrying them by the lever of the machine-A self-
feeding arrangement as usually applied to wood-working machines of this
description may be utilized to automatically feed the work towards the saws
aforesaid.
The application of saws for the purpose or purposes hereinbefore described con-
stitutes the novelty of the contrivance or device according to my invention and the
waste of material incidental upon the use of a wide tool as usually employed for
the purpose is entirely obviated and the pieces that are cut out in forming the
tenon are of a serviceable shape for packing or wedges instead of chips as in the
machinery heretofore used for this purpose.
The work may be done at one setting thus saving the time that is wasted in
refixing when the usual apparatus is employed.
I will now proceed to describe my invention in detail referring to the accom-
panying drawing in which like parts are marked with like reference letters :-
Fig. 1, is a side elevation of the frame and saws broken of as they can be made
of any suitable length for the purpose of this invention.
2 is a front elevation of same.
3 is a plan of the guides and plate to which they are attached.
"
"
4 is an end elevation of same.

page_text: A is a shank which fits into a hole in the end of the mortising machine rod
(shewn at B broken off). The shank A. is either made part of the frame C, or
attached thereto-A projection D inside the frame under the shank has a hole E
drilled in it through which a screwed pin F passes, which has four nuts G G G G
upon it-The saws H H (a pair being shewn here, though any number may be
used) likewise have holes in their ends I through which the screwed pin F passes
and the saws being adjusted to the requisite width of tenon or cut, the nuts G are
tightened, holding the saws rigidly fixed at the upper end. The other end of the
saws are fixed in the same manner to the projection K on the screwed pin L by
the nuts M M M M; but, previous to tightening up these nuts, the saws (being
held rigidly at the upper end D) must be strained by means of the nut N being
tightened, thus drawing the bolt O downwards (slots P P being left in the frame
for that purpose) and with it the projection K to which is attached the lower ends
of the saws HH-When these saws are strained sufficiently tight for working, the
nuts M are tightened and the whole is fit for work.
The plate R (Figs. 3 and 4) is attached to the frame of the mortising or other
machine with which this attachment is used by means of bolts or screws passing
through holes S S, or by other means, in such a manner that the lower end of the
frame C. slides through a slot T formed in plate R.
Adjustably fixed to the plate R by means of screws UUUU are guides W W
of brass, or other suitable material to hold the frame C against the work, and
ensure a vertical position under the rod of mortising machine.
The saws can be adjusted to any width of tenon or cut by the insertion of
packing pieces between the saws H H and the projections D or K, or additional
nuts may be used for the same purpose and one or many saws may be used for
cutting double tenons at one operation &c.
I do not bind myself to any particular number of saws.
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 application of one or more saws for the purpose of cutting tenons
adapted for use with a mortising or other similar machine substantially as herein
described and shewn.
(2.) The combination of saws, frame, guide, plates and the adjustable screws, nuts
and tension bolt, substantially as herein described and shewn.
Dated this fourth day of November 1886.
RD. HUTCHINSON,
Agent for the Applicant.