An Improved Lathe Attachment, applicable to other Machine Tools.
Year: 1896

page_text: Date of Application, 1st Jan., 1896
Complete Specification Left, 14th Aug., 1896-Accepted, 3rd Oct., 1896
PROVISIONAL SPECIFICATION.
An Improved Lathe Attachment, applicable to other Machine Tools.
I, JOSHUA HEATH MAYER of Ottery St. Mary Devonshire, Watchmaker
do hereby declare the nature of my said invention to be as follows:-
My invention has for its object a new device for attachment to lathes and other
machines which is a great convenience for wheel cutting, inilling fluting, drilling
and other operations as it may be directed to work in almost any desired direction
upon articles under operation.
The base of my device is so formed as to fit upon the top of a slide rest or other
similar position and may be of any desired external configuration though I prefer
for small lathes a foot rounded at the end and with a hole or holes for attachment
to the rest or other part. The front of the foot is formed into a clamp socket
to receive the round body of the device which may he set by the clamp socket in
any desired position around its centre. The round body of the device is then set
back or cranked and carries a journal at its outer end which is by preference bored
out with double cones to carry a revolving arm with its grooved pulley to be driven
by a gut. The front of this arm is formed to receive either a drill or cutter or
cutting discs or other tools which may be set to act in any direction though when
in its normal position its centre would agree in level with the centres of the lathe
or machine upon which it is operating. To afford still further facility for
adaptation to skew work I may form a branch at the end of the main body part
upon which the cranked arm is secured in any position around the centre of the
branch by means of a secured clamp socket.
Dated this 31st day of December 1895.
GEORGE BARKER,
77 Colmore Row, Birmingham, Agent for Applicant.
An Improved Lathe Attachment, applicable to other Machine Tools.
1, JOSHUA HEATH MAYER of Ottery St. Mary Devonshire Watchmaker
do hereby declare the nature of my said invention and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement :-
My invention has for its object a new device for attachment to lathes and other
machines which is a great convenience for wheel cutting, milling fluting drilling
and other operations as it may be directed to work in almost any desired direction
upon articles under operation.
The base of my device is so formed as to fit upon the top of a slide rest or other
similar position and may be of any desired external configuration though I prefer
for small lathes a foot rounded at the end and with a hole or holes for attachment
to the rest or other part. The front of the foot is formed into a clamp socket
to receive the round body of the device which may be set by the clamp socket in
any desired position around its centre. The round body of the device is then set

page_text: back or eranked and carries a journal at its outer end which is hy preference hored
out with double cones to carry a revolving arm with its grooved pulley to be
driven by a gut. The front of this arm is formed to receive either a drill or
cutter or cutting discs or other tools which may be set to act in any direction
though when in its normal position its centre would agree in level with the centres.
of the lathe or machine upon which it is operating. To afford still further
facility for adaptation to skew work I may form a branch at the end of the main
body part upon which the cranked arm is secured in any position around the
centre of the branch by means of a second clamp socket.
In order that my invention may be clearly understood and more easily carried
into practical effect I have appended hereunto a double sized sheet of drawings
upon which I have illustrated some examples of the same which will enable others
to apply it broadly to the various needs met with in practice.
Figure is an elevation of one form of my new device drawn to an enlarged
scale for the purpose of clearness and it is in position to operate upon the wheel W
which is fixed on the mandrel hetween the centres of a screw cutting lathe
having a slide rest as the foot A is fixed to the slide rest which it is not necessary
to show upon the drawings as it is a tool well understood.
Figure 2 shows the upper portion B of my device detached and holding a
different kind of cutter to the circular one C shown by Figure 1 but Figure 2 is
drawn to a smaller case though it fits on the part a' of Figure 1.
Figure 3 is a plan of Figure 1.
Figure 4 shows a modification of the intermediate part of the device H which
may be exchanged for E when it is desired to do such like work as the cutting
of skew teeth on wheels.
Figure 5 is a plan view of Figure 4.
Figure 6 shown an alternative mode of making the foot A.
Figure 7 is a plan view of Figure 6.
Figure 8 shows a general modification of the device or tool which is adaptable
to the slide rest by the use of packing.
My device is made with the foot A and any convenient gap or hole a for
securing it to the top or other part of a slide rest and it is provided with the
pin a upon which the intermediate part E slotted at e' may be secured and set to
any angle by the screw. This intermediate part E carries the split barrel or
benring which may be tightened by the screw upon the spindle of B which
constitutes the upper portion of the tool or device being connected to by the
eranked arm b'. B is a barrel or hearing for carrying the spindle & which may
be mounted with any kind of tool drill or cutter but a circular cutter is shown
at Figure 1 fastened by the nut and suitable for cutting the teeth in W which
is fast upon the mandrel ' and in Figure 2 an ordinary single cutter c is shown
though it will be clearly understood that any kind of cutter drill or tool may be
substituted for the ones shown. The upper portion B of the device may be
attached to the foot M Figures 6 and 7 direct, that is the part & fits into mand
is fastened by the screw m the part m being slotted at m as will be clearly
understood. Then the part H may be substituted for the portion E by which the
cutter may be raised to any desired height to operate over the centre of any
wheel W and by fixing the slide rest niay be traversed skew wise for cutting
skew teeth ard for many such like purposes. Figure 5 shows II in plan and it
will be seen that by the screw I may be tightened upon a2 in any position
and may be tightened upon by the screw in any position. The device as
shown at Figure 8 consists of the foot K with its bearing split at 3 and tightened
by the bolts upon the hollow collar bearing n' n' of N which is cranked up and
carries the barrel or bearing P through which the spindle S for holding the tools s
passes. The bracket R may be tightened upon P at any position so as to guide
the driving gut (not shown) by means of the guide pulleys 3, 3, working on the
pivot. The spindle S carries the pulley by means of which the spindle is
revolved when in operation. The tool shown at Figure 8 is a small emery stone a

page_text: is
which is fixed to its right position as guided by the loose centering bar n³ which
may either be withdrawn or left as shown, and the position of the tool
regulated by thickness pieces or washers and tightened together by the nut s³.
When it is desired to raise this tool higher thickness pieces must be placed under
the foot K.
It will be clearly understood that by means of this device or tool added to the
slide lathe that wheels whether bevel skew or straight teeth, or milling or skew
drilling and numerous other operations may be performed in almost any direction
and with perfect facility and accuracy with very little trouble and with great
expedition.
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 :-
First. The new device for attachment to slide lathes and such like machines
consisting of a foot such as A to fasten to the slide rest with an intermediate piece
such as E or H to which the tool portion B is secured for carrying tools and for
operating upon any article W fixed in the said lathe or machine with their supple-
mental parts substantially as herein set forth and as shown upon the drawings by
Figures 1 to 5 inclusive.
Second. The modification shown by Figures 6 and 7 for fixing the part B
direct thereto without the intermediate portions E or Has herein set forth and as
shown.
Third. The modification shown by Figure 8 where the part N may be fixed
direct to the foot K in any desired position so as to bring any form of cutter &³
into any desired position with its bracket R and friction wheels all substantially
as shown and explained.
Dated this 12th day of August 1896.
GEORGE BARKER,
77 Colmore Row, Birmingham, Agent for Applicant.