An Improved Forming Apparatus for Wood Turning Lathes.
Year: 1886

page_text: An Improved Forming Apparatus for Wood Turning Lathes.
3
I, JOHN WILSON DULSTON of 243 Drake Street Rochdale in the County of
Lancaster Engineer do hereby declare the nature of my said invention for
AN IMPROVED FORMING APPARATUS FOR WOOD TURNING LATHES to be as
follows:-
My invention relates to an Improved Forming Apparatus for Wood Turning
Lathes, and consists essentially of a pair of slides, which can freely slide; in the
same straight line; along the grooves or Vees formed in the carriage. These slides
are truly bored to receive two circular racks or rods provided with teeth along a
portion of their length.
One end of each rack is secured; by a pin or screw; to the slides; whilst the
other ends or portions are free to slide through the recesses bored and prepared in
the beforementioned slides.
The two distinct parts or slides, are as it were; bound together by the racks but
yet free to slide independently of each other.
The racks are connected together by a toothed pinion, and actuated by a shaper
or former disc, which bears against the templet or pattern.
The former disc is carried by a bracket, which is cast upon one of the slides.
Hence any motion communicated by the templet to the former disc, will be
transmitted by one of the racks, to the pinion (which is placed centrally between
the two racks) and from thence to the other rack which will then cause the front
slide, to move identically, but in the opposite direction. Thus producing similiar
shapes or forms, to those of the templet, in consequence of the cutters being guided
in their motion, by the front slide.
A pair of spiral springs, supported from the slides by small fixtures, are adjust-
able to suit the various sizes of templets used.

page_text: An improved Forming Apparatus for Wood Turning Latnes.
I, JOHN WILSON DULSTON of 243 Drake Street Rochdale in the County of
Lancaster Engineer do hereby declare the nature of my invention for AN
IMPROVED FORMING APPARATUS FOR WOOD TURNING LATHES and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
My invention relates to an Improved Forming Apparatus for Wood Turning
Lathes, and consists essentially of a pair of slides, which can freely slide in the
same straight line, along the grooves or Vees formed in the lathe carriage.
These slides are truly bored to receive two circular racks, or rods provided with
teeth along a portion of one side of each of their lengths.
One end of each rack is secured; (by a pin or screw,) to the slides whilst the
opposite extremities or portions are free to slide through the recesses, which are
bored and prepared in the beforementioned slides.
The racks are connected by a toothed pinion which is free to revolve upon a
stud, screwed into the carriage in such a position as to be centrally between the
two racks and slides.
The two distinct parts or slides are as it were, bound together by the racks and
pinion, but yet free to slide independently of each other, as regards the direction
the direction in which each slides moves. The former disc is carried by a bracket,
cast upon the back slide, and hence any motion derived from the templet and
communicated to the disc, with which it is in contact, must consequently be
transmitted from one rack, through the pinion, to the other rack.
The racks being engaged with opposite sides of the pinion, causes each slide to
move exactly through equal distances, but in contrary directions. Thus producing
similiar shapes, or forms, to those of the templets which are placed to revolve
between the back headstocks centres of the lathe.
A pair of spiral springs, which are supported, from the slides, by small fixtures,
are made adjustable by the action of nuts, and screwed extremities. These being
adjustable to suit the various sizes of templets being used.
In order to describe the nature of my said invention, and the manner of
performing the same, I have caused to be annexed to this specification, the
accompanying sheet of drawings, illustrative of the application of my invention to
Wood Turning Lathes. With respect to the before mentioned sheet of drawings,
and the figures, and letters of reference thereon indicated Figs. 5. 6: 7. represent
the plan, & side, and front elevations respectively and the letters of reference
correspond in each view.
a & e, represents the back and front slides respectively, to the former of which
there is attached the 'bräcket a', which carries the former or shaper disc. The
rack, 8, is fixed to the slide, a, by a pin, p, and must therefore traverse with it,
whilst the opposite extremity (which corresponds to 8¹) is free to slide easily within
the recess, s¹, of the slide, e.
The rack, s³, is fixed to the slide, e, by a pin or screw, q, and they must there-
fore traverse together, whilst the opposite extremity, a³, is free to slide within the
recess, 8, of the slide, a

page_text: The toothed pinion, r, is free to revolve upon a stud fixed into the lathe carriage.
The spiral springs, n, n, have their extremities secured in the small fixtures w, w,
and v, v.
Each spring being adjusted by the nuts, m, o.
Any motion received, from the templet by the former disc, and consequently the
alide, a, will be transmitted through the pinion, r, and thence to the rack, 8³, which
moves with the slide; e, but in a contrary direction to the traverse of the slide, a.
The slide which carries the cutters is fixed into the recess formed into the
boss, e, of the slide, e, and must, consequently produce similiar shapes, at the
cutting edges, to those of the templets.
.
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-
1st. The combination of mechanism or apparatus, or any equivalent apparatus,
which is used for simultaneously actuating each independent slide to move exactly
through equal distances, but in contrary directions, substantially as, and for the
purposes herein before described and illustrated.
Dated this the 28th day of June 1886.