An Improved Machine for Trenching, Grooving, and Tenoning, and Method of Driving same.
Year: 1892

page_text: Date of Application, 31st Dec., 1892
Complete Specification Left, 30th Oct., 1893-Accepted, 2nd Dec., 1893
PROVISIONAL SPECIFICATION.
An Improved Machine for Trenching, Grooving, and Tenoning, and
Method of Driving same.
I, JAMES VANSTONE PORTER of 17 Gerard Street, Derby in the County of
Derby, Builder, do hereby declare the nature of this invention to be as follows:-
I provide a table of suitable form, the front part preferably radiating from a
pivot at the back upon which I mount a suitable frame containing or carrying a
sliding inner frame which has a spindle carrying a cutter-block, and fixed also on
the said spindle is a driving pulley round which passes the belt, cord or the like,
the latter being preferably crossed over same and passed over rollers on the inner
frame and round pulleys on the outer frame and then over the usual pulley on the
driving shaft the pulleys on the outer frame are mounted in slotted plates or I
may provide other suitable means of adjusting the length of the belt, cord or the
like, according to the angle at which the machine is used.
The method of using the machine is as follows:-The outer frame is first set
according to the required position or angle at which it is desired to form the
trench, groove or tenon, the said outer frame being then fixed or clamped to
the table in any suitable manner sufficient space being left between the two for
the wood or other material to pass upon which the trenching tool or cutter is to
operate. I provide an adjustable stop or other means of limiting the length of the
trench or groove it being understood that the sliding inner frame is operated by
hand, screw or other suitable means according to the nature of the work and wood
or other material to be operated upon.
Any suitable means may be employed for keeping the wood or work in position,
such as by cramps or the like.
I may employ a spiral spring or springs at either or both ends of the outer
frame with an adjustable screw arrangement for raising or lowering the frames
according to the thickness of the wood or other material to be operated upon.
Dated this 30th day of December 1892.
W. SWINDELL,
Agent for the Applicant.
COMPLETE
SPECIFICATION.
An Improved Machine for Trenching, Grooving, and Tenoning, and
Method of Driving same.
I, JAMES VANSTONE PORTER of 17 Gerard Street, Derby in the County of
Derby, Builder 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 :-
To more fully illustrate the meaning of my said invention I have caused to be
annexed to this Specification two sheets of drawings the different figures and letters
of reference marked upon which will be hereinafter referred to.
Figure 1 is a vertical section on line a. a. of Figure 2.
Figure 2 is a plan of my improved machine.
Figure 3 is a vertical section on line b. b.
Figure 4 is a vertical section on line c. c. shewing the method of driving my
improved machine.
In carrying out my said invention I provide a table A of suitable form upon any
suitable framework or support such as N the front part A' of the said table

page_text: preferably radiating from a pivot B at the back upon which I mount a suitable
outer frame C containing or carrying a sliding inner frame D which has a spindle E
carrying a cutter block Fin or on which the different cutting tools are fixed, on the
said spindle is also fixed a driving pulley G round which passes the belt, cord or
the like H the latter being preferably crossed over same and passed over rollers,
shewn by dotted lines on Figure 4, on the inner frame, and round pulleys I on the
outer frame and then over the usual pulley J on the driving shaft K; the pulleys I
on the outer frame may be mounted in slotted plates (not shewn upon the drawings)
or I may provide other suitable means of adjusting the length of the belt, cord or
the like according to the angle at which the machine is used, and I may if desired
dispense with the rollers on the inner frame as shewn on Figure 4.
The method of using the machine is as follows:-
The outer frame C is first set according to the required position or angle at
which it is desired to form the trench, groove or tenon, the said outer frame being then
fixed or clamped to the table by means of wing nuts L, L', or by any other suitable
means, sufficient space being left between the two for the wood or other material
to pass, upon which the trenching tool or cutter is to operate. I may provide an
adjustable stop or other means of limiting the length of the trench or groove it
being understood that the sliding inner frame is operated by hand, screw or other
suitable means according to the nature of the work and wood or other material to
be operated upon.
Any suitable means may be employed for keeping the wood or work in position,
such as by cramps or the like.
I may employ a spiral spring or springs M, M' at either or both ends of the
outer frame with an adjustable screw arrangement as shewn upon the drawings for
raising or lowering the frames according to the thickness of the wood or other
material to be operated upon.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The improved machine for trenching, grooving and tenoning substantially as
described herein and illustrated by the accompanying sheets of drawings.
2. The method of driving the said machine substantially as described herein
and illustrated by the accompanying sheets of drawings.
3. The whole substantially as and for the purposes described herein and as
illustrated by the accompanying sheets of drawings.
Dated this 28th day of October 1893.
W. SWINDELL,
Agent for the Applicant.