Improvements in Lathes.
Year: 1889

page_text: Date of Application, 6th Dec., 1889
Complete Specification Left, 5th Sept., 1890-Accepted, 11th Oct., 1890
PROVISIONAL SPECIFICATION.
Improvements in Lathes.
We, SIMEON LORD of the firm of William Lord and Son, of Rose Hill Iron Works,
Roller Makers and Ironfounders, and JAMES JACKSON of 31 Rose Street, Foreman
Roller Maker, both of Bolton in the County of Lancaster, do hereby declare the
nature of our said invention to be as follows:-
This invention relates to improvements in lathes employed for spacing and cutting
down rollers and other articles and consists in providing means whereby the same will
be more automatic in their action and effect a considerable saving in labor. The tool
rest is mounted on a sliding frame operated by a cam or cams mounted on a shaft
driven at the requisite speed by worm or other gear from any convenient part of the
lathe. The cam or cams is mounted between slotted fixings attached to the sliding
frame carrying the tool rest or rests and operates on an adjustable or other howl or
centre to operate the tool or tools against the articles being turned, spaced or cut down.
The cam or cans so constructed as to allow of the sliding frame being pressed back
by a spring or its equivalent after the articles are turned, spaced, or cut down to the
desired length and depth. The sliding frame is also provided with means to allow of
the employment of adjustable tool rests operated by screws for the purpose of varying
the widths of the articles to be turned, spaced, or cut down, thereby ensuring accuracy
and evenness in the length of the same, which is of vital importance when large
numbers of articles have to be made of. equal dimensions.
Dated the 5th December 1889.
EDMUND CHADWICK,
Agent.
COMPLETE SPECIFICATION.
Improvements in Lathes.
We, SIMEON LORD of the firm of William Lord and Son, of Rose Hill Iron Works,
Roller Makers and Ironfounders, and JAMES JACKSON of 31 Rose Street, Foreman
Roller Maker, both of Bolton in the County of Lancaster, do hereby declare the
nature of our said 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 improvements in lathes employed for spacing and cutting
down rollers and other articles and consists in providing means whereby the same will
be more automatic in their action and effect a considerable saving in labor. The tool
rest is mounted on a sliding frame operated by a cam or cams mounted on a shaft
driven at the requisite speed by worm or other gear from any convenient part of the
lathe. The cam or cams is mounted between slotted fixings attached to the sliding
frame carrying the tool rest or rests and operates on an adjustable or other bowl or
centro to operate the tool or tools against the articles being turned, spaced, or cut
down. The cam or cams is so constructed as to allow of the sliding frame being
pressed back by a spring or its equivalent after the articles are turned, spaced, or cut
down to the desired length and depth. The sliding frame is also provided with means
to allow of the employment of adjustable tool rests operated by screws for the purpose
of varying the widths of the articles to be turned, spaced, or cut down, thereby
ensuring accuracy and evenness in the length of the same, which is of vital
importance when large numbers of articles have to be made of equal dimensions.
Fig. 1 is a front elevation of a lathe with our improvements applied for automatically
spacing and cutting down rollers and other articles.
Fi is a plan of anma

page_text: Fig. 3 is an end view showing gear for driving our improvement.
Fig. 4 is a part sectional elevation through line A¹ B' in Figs. 1 and 2.
Fig. 5 is a single cam to operate once in a revolution.
Fig. 6 is a double cam to operate twice in a revolution.
Fig. 7 is a triple cam to operate three times in a revolution.
Fig. 8 is a quadruple cam to operate four times in a revolution, and
Fig. 9 is a plan of a block placed between the sliding tool rests to vary the width
or distance of the tools according to the articles to be turned, spaced, or cut down.
A, A, are standards; B the lathe bed; the headstock; D the compound tool rest
to allow of adjustment either longitudinally or transversely by means of the screws E,
and W are the driving pulleys. The compound tool rest Ď is mounted on the sliding
frame G, being secured thereto in any convenient manner. The sliding frame G is
mounted loosely on the sliding carriage H on the lathe bed B; the said carriage being
operated in either direction in the usual manner. To the sliding frame G, carrying
the compound tool rest D, is secured the slotted fixing I with the arms J, between
which is mounted the cam K on the shaft L. The arms J are provided with the
slots M to allow of the sliding movement of the same over the shaft L. The cam K
operates on the bowl N mounted on the centre O in the holes P; the latter being of
such a length as to allow of adjustment of the bowl N according to the amount to be
cut or turned off the articles under operation. The sliding frame G is fitted with the
spiral spring Qto press back the same when liberated from the forward action of the
cam K after the articles are turned, spaced, or cut down to the desired length and
depth. The shaft L is mounted in the bearings R attached to the lathe bed B, and is
provided with the key-way S in which the key T in the cam K fits to drive the same.
The shaft L is driven by the spur wheels V and V¹, bevel wheels X and X', shaft T',
worm wheel S¹, and worm M¹ from the centre Z of the lathe; the said gear being
supported in the fixings F. When it is desired to operate on more than one roller or
article at once, as in Fig. 9, the sliding blocks Y are separated by the screw E to
receive the block D' prepared to receive the tool rests L'. The intervening block D'
can be of any desired width according to requirements.
This invention operates in the following manner :-After the rollers or other
articles P are secured between the centres A2 and the lathe is in motion the
cam K rotates in the direction indicated by the arrow, which action slides the
frame G and compound tool rest D and places the tools B' against the rollers or
other articles P³ to space or cut down the same; the depth of such operation
being determined by the throw of the cam K. During this operation the spiral
spring is being gradually placed in tension, which, immediately the bowl or
centre N is released from the face or the point 2 of the cam K, slides the frame G
backwards with the compound tool rests and tools, after which the article turned,
spaced, or cut down can be removed from between the centres A² and replaced by
another article requiring such treatment, when the operation is repeated automati-
cally without altering the travel or stopping the lathe. An important feature of
this invention is that being automatic in its action one person can attend to several
lathes, the only attention necessary being to place and remove the articles from
the lathe. The cam K can be constructed as shown in Figs. 5, 6, 7, and 8, or
otherwise according to the speed at which it is desired to operate the sliding
frame G.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed; we declare that what we
claim is :-
1. In combination with a lathe employed for spacing and cutting down rollers and
other articles, the use of the sliding frame G, carrying a tool rest or rests and tools,
moved in one direction to operate on the rollers or other articles by a cam, the reverse
motion being effected by a spring, substantially as described.
2. In combination with the sliding frame G the use of the cam K and spiral spring Q
for the purpose specified, substantially as described.

page_text: 3. The use, construction, combination, and arrangement of mechanism forming our
invention, consisting of the sliding frame G carrying the compound tool rests and
tools, the fixing I, cam K, adjustable bowl L, spring Q, shaft L, bearings R, and the
means for driving the same, for the purpose of spacing or cutting down rollers and
other articles, substantially as described.
Dated the 1st Santambon 1800
EDMUND CHADWICK,
Agent.