Apparatus for Communicating Reciprocating Motion to Planing and other Machines
Year: 1886

page_text: PROVISIONAL DEMOTIVATIVA
:
Apparatus for Communicating Reciprocating Motion to Planing
and other Machines.
I WILLIAM MUIR of 143 Brockley Road, New Cross, Surrey, Engineer, do
hereby declare the nature of this invention to be as follows:—
This invention relates to the employment of two coned yet sectional nuts
connected in double pairs and capable of being simultaneously opened and closed to
release and to grip the threaded rods on which each pair travel, said opening and
closing operation being effected by bands or rings the inner portions of which are
grooved or slotted for engaging and sliding upon shaped projections on the sections
of the nuts,
The two bands or rings of each pair are connected by links and a lever and the
double pairs are connected by a rod, which can be struck or moved over to the
right or to the left according to the desired travel of the nuts.
H. GARDNER,
Agent for the said W, Muir,
Dated this 27th day of February 1886.
H. GARDNER,
Agent for the said W. Muir,

page_text: Apparatus for Communicating Reciprocating Motion to Planing
and other Machines.
I WILLIAM MUIR of 143 Brockley Road, New Cross, Surrey, Engineer, 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:-
This invention relates to the employment of two coned yet sectional nuts
connected in double pairs and capable of being simultaneously opened and closed
to release and to grip the threaded rods on which each pair travel, said opening
and closing operation being effected by bands or rings, the inner portions of which
are grooved or slotted for engaging and sliding upon shaped projections on the
sections of the nuts.
The two bands or rings of each pair are connected by links and a lever and the
double pairs are connected by a rod which can be struck or moved over to the
right or to the left according to the desired travel of the nuts.
My invention will be understood by the annexed drawings in which at Figures 1
and 2 I show side and end elevations of one of the sectional nuts made in four
pieces A, B, C, D, of conical shape and provided with a screw thread on their inner
faces. The outer surfaces are each provided with a fillet or rib E, F, G, H pro-
jecting for nearly the whole length of the sections and on to and over which
touching them and the outer surface of the sections a ring or band I conical on the
inner surface shown in Figure 3 fits, to be moved along the nut and so open or
close the sections by reason of their conical formation.
The nuts are coupled in pairs one pair as on the left hand side of Figure 4 with
a thread to work on the right hand cut screw shaft K and the other pair also
coupled as on the right hand side of Figure 4 has a thread to work on the left
hand cut thread of the screw shaft L as more particularly seen by the plan view
Figure 5 when the latter pair of the sectional coned nuts are put into contact with
the thread such as when the frame M in which the nuts are fitted is required to
travel in the reverse direction to that which it has been travelling.
The frame M which holds the two pairs of nuts is a kind of bracket attached to
say the table of a planing machine to which a reciprocating motion has to be given
whether for single cutting or for double cutting that is to say cutting both
directions of the table's motion. The two pairs of nuts in the frame or bracket M
according to the drawing are coupled in pairs by links N N and a tumbling
block P on a pivot Q of the frame M. The tumbling block Q of each pair has a
lever B which by means of the bar S couple the two pairs of nuts so that a
movement of the bar by hand or otherwise to the desired extent could put both
pairs of nuts out of contact with the threaded rods K, L, or put either pair into
action with the threaded rods so that they, ie. the nuts with the frame M would
travel in the desired direction.
I have in Figures 4 and shown a plan by which the two pairs of nuts working
on the threaded rod K, L, can be automatically thrown into and out of action by

page_text: the extension T, T, of the bar S striking against some fixed or an adjustable stop
set on the side of the machine the levers R and the bar S being shown between the
two threaded shafts K, L, but by having a single shaft with right hand thread at
one end and left hand thread at the other terminating near the centre of its length
such as I have shown at Figure 6 the two pairs of nuts and consequently the
frame M and the table may be operated in a similar manner to that described for
the two rods. In this Figure I have shown the bar S provided with pins U, U,
which slide up or down the slots V, V, formed in the lower ends of the levers R
thus ensuring parallel motion of the bar S. The threads on the rods K, L, shown
in the drawings are of the same pitch therefore the backward or the forward travel
would be uniform but where a rapid return movement of the table such as when
cutting in one direction only is desired one of the rods may have a thread of a
much quicker pitch so as to produce a quick return stroke.
I have referred more particularly to the application of my invention to the table
of a Planing Machine but it is equally applicable to Slotting Machines, Shaping
Machines, Stamping Machines, Forging Machines, and others requiring such to and
fro travel or an up and down travel whether at the same or at different speeds, or
whether the machines work in metal, wood, or other material.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what
I claim is :-
The employment of two pairs of segmental expansible nuts coupled in them-
selves and to each other and working on two opposite threaded rods or on a single
rod with double or reverse threads as described and substantially as shown in the
drawings for communicating reciprocating motion to Planing and other machines
at the same speed in both directions or at different speeds alternately as set forth.
H. GARDNER,
Agent for the said W. Muir,