Improvements in or connected with the Construction of Machines for Shaping Metals.
Year: 1889

page_text: Date of Application, 8th May, 1889
Complete Specification Left 7th Feb. 1890 Accented 8th Mar 1890
PROVISIONAL SPECIFICATION.
Improvements in or connected with the Construction of Machines
for Shaping Metals.
We,, THOMAS MAYHEW BEAR, Engineer, and JAMES PAXMAN, Engineer, both of
Colchester, in the County of Essex, do hereby declare the nature of this invention
to be as follows
-
This invention relates to an improved construction and arrangement of parts employed
in shaping machines for holding and presenting the work to the cutting tool, and
consists in so constructing and arranging the same that the work bed can be readily
moved in, a horizontal, vertical, or circular direction, and so allow the various faces
of the work to be surfaced to be. brought quickly under the operation of the
tool held on the ramhead in the usual manner without resetting the same
To this end we attach to the front vertical face of a shaping machine bed by means of
bolts, the heads of which engage in the usual horizontal slots of same, an apron which
is thus capable of a horizontal movement when the nuts of the bolt heads are loosened,
or a rack and pinion motion may be provided to produce the same result
This apron
has. vertical V shaped slides, on which works a correspondingly grooved plate carrying
the usual circular work table. The vertical movement of this plate (and consequently
the table) is produced by hand by means of a worm operating a worm wheel upon a
vertical screwed spindle which travels through a nut connected to or forming part of
the plate or work table. In this way the screwed spindle when revolved by the worm
gear will raise or lower the nut and consequently the plate and work table.
To give a circular movement to the work table it is affixed to the plate so as to be
capable of revolution, and its inside face is provided with a worm wheel which is
operated by a worm, so that the table can be rotated by hand to bring any face of the
work under the action of the tool.
When it is desired to revolve the table automatically, this worm wheel gearing may
be adapted to be operated by a ratchet and pawl to which motion is given from some
part of the machine, so that circular work such as cylinder flanges, cross heads, ends
of connecting rods &c. may be readily and quickly machined.
Dated this 8th day of Mo 1889
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London, Applicants' Agent.
COMPLETE SPECIFICATION.
Improvements in or connected with the Construction of Machines
for Shaping Metals.
We, THOMAS MAYHEW BRAB, Engineer, and JAMES, PAXMAN, Engineer, both
of Colchester in the County of Essex, 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
-
Our invention relates to an improved construction and arrangement of the work-
table for shaping machines for holding and presenting the work to the cutting tool,
by which the table.can be readily moved in a horizontal or vertical direction or have a
circular motion given to same, so that the various faces of the work to be surfaced
may be brought quickly and without resetting under the operation of the tool held on
the ramhead in the usual manner.
To clearly explain the nature of our invention reference is made to the
accompanying drawings, in which :-
Figure 1 is a front elevation of our improved device with the face or actual work
table and the pinion for traversing it horizontally removed,
Pi Q77

page_text: Fig. 2 is a bottom view of Fig 1, but with the work table in position
Fig. 3 is an elevation, partly in section, of Fig 1, looking from the left
hand side.
Fig. 4 is an elevation of the same side, also partly in section, and with the apron or
casting B, hereinafter referred to, removed.
Fig 5 is an elevation of our improved device in position on a shaping machine, a
part of which only is shown.
Fig 6 is a view of same looking from the left hand side of Fig. 5.
To the vertical face A of a shaping machine-such as shown in Figs. 5 and 6-we
apply an apron or casting B attached to same by means of bolt heads a a,
Figs. 3 and 6, which slide in the usual T shaped slots of same, and which are capable
of being tightened up by nuts bb, so as to fix the apron at any desired point.
In the horizontal face A we secure a rack D, with which engages a pinion d carried
in brackets dd, forming part of the apron B. This pinion d is carried on a
spindle dFig 3, on which it is secured by a feather e (shown in dotted lines), so as to
turn therewith The spindle terminates in a squared or nut shaped head f and may
be held in the bracket below by a screw and washer, as shown. By applying a spanner
to the head the pinion d will be turned, and, engaging with the rack D, will
allow the apron to be traversed horizontally along the face of the bed A.
$6
"
The apron B has two angle faced slides g, with which engages a casting E carrying
a circular work table E¹ This casting E has two female angled slides (not shown)
cast thereon, fitting the male angled_slides g g on apron B, Fig. 2, and enabling the
casting E to slide vertically on B. Two portions (near the top and bottom) of each
slide are cut away and fitted with four short pieces h h of angled slide or pads,'
which can be firmly tightened against the slides g g by nuts and bolts passing through
them to fix the casting E securely in position when adjusted vertically to the required
height To perform this vertical adjustment we employ a screwed spindle i carried
in bearings. Figs. 1 and 3, forming part of the casting E. The screw of this spindle
engages with a block or nut k, having a corresponding female thread and which forms
part of the apron B. On the head of the spindle is secured a worm wheel / which
engages with a worm m upon a spindle or shaft n carried in suitable brackets ooo,
forming part of the casting E This shaft n terminates in a squared head, which
may receive a handle n' as shown in Fig. 2. The turning of this handle will, through
the worm and worm wheel, rotate the spindle 2, which by rotating in the block k will
be raised or lowered, and with it will raise or lower the casting E and work table E'.
This latter table has a circular face, with the usual T shaped slots for allowing the
work to be fixed to same. As shown in Fig. 3 it has a boss or projection E³ which
passes through an-opening in the casting E, and to which is secured-by-screws-a-
worm wheel p which engages with a worm q secured upon a shaft carried in
brackets s 8 8.
This shaft may terminate in a squared head similarly to the shaft n
and be operated by a handle, like n¹, such an arrangement being shown in dotted lines
in Fig. 1, or it may terminate in a bevel gear t, operated by means hereinafter
described. The turning of this shaft r will, through the worm 9 and worm wheel p,
allow of the circular table E¹ being rotated so as to bring any face of the work
secured on same under the action of the cutting tool The casting E has a pro-
Jection Es on the lower part of same, on which rests a bridge shaped piece u having
its upper face curved to correspond to the radius of the table E. This bridge
piece is capable of being raised or lowered by a wedge u¹ as it is moved forward
or backward by a screw u³, so that when the desired position of the table and work
has been attained this bridge piece may be forced up against the edge of the table to
hold it firmly in position
When it is desired to rotate the table automatically with a step by step motion,
so that circular work affixed thereon-such as cylinder flanges, crossheads, ends of
connecting rods, &c.-may be readily and quickly machined, we employ an arrange-
ment such as is illustrated in Figs. 5 and 6, in which the bevel gear & on the
shaft gears with a bevel gear t on a shaft G, which while capable of rotating
same, is allowed to move vertically by its method of attachment, which consists

page_text: of a feather (not shown) on the inside of same which engages with a groove ton
the shaft, Fig. 6. In this way the table may be raised or lowered vertically without
disturbing the rotating gear. The shaft & has at its foot a bevel gear t which
This shaft has a groove h¹
engages with another bevel t secured on a shaft H.
therein and carries a bevel h which has a feather engaging with said groove, so
that the shaft may be capable of travel longitudinally when it is desired to move
the work table in that direction. The gear his driven from a ratchet wheel K
carried on a bearing at the side of the machine through gears h³ / h, the latter
being on the same shaft as the ratchet, which shaft, as shown, may have a squared
head for operating the parts by a handle when desired. The ratchet K is operated
by a pawl k¹, which is attached to a pivoted arm, operated by a rod L which
is secured to a slotted disc w in the manner shown, so that the throw of the rod,
and consequently the movement of the pawl may be adjusted as desired. The
disc w is connected to or forms part of a pinion w¹, having its bearing in a bracket
at the back of the machine, which pinion is driven from a second pinion w³ on the
ordinary main shaft M of the machine. In this way, through the parts just
described, the shaping table E¹ may be given a step-by-step rotary movement, the
amount of which is adjustable by the throw of the rod L, so that the face of the
work affixed to the table may be presented to the cutting tool momentarily and
then moved on for a second cut parallel therewith, so that circular objects may have
their radius reduced in the manner well known.
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 18.-
1. The combination with the bed of a shaping machine, of an apron or casting
capable of longitudinal movement thereon and carrying a casting with means for
giving same a vertical movement, said casting carrying a work table with means for
rotating same, substantially as described
2. The combination with the bed of a shaping machine, carrying a rack D, of an
apron or casting B, carrying a pinion engaging with said rack for imparting a
horizontal movement to same, and a sciew block or nut K, a casting E, travelling on
slides on said apron and having a screwed spindle engaging with said nut K for
raising and lowering said casting and means for operating same, and a circular work
table E carried by said casting and having a worm wheel, with means for operating
same, by which a circular motion can be given to said work table, substantially as
described.
3. The combination with a work table, of means for imparting thereto longitudinal
and vertical movement, shafting and gears for imparting rotary movement to the said
table, a rod having an adjustable throw, and a ratchet and pawl for operating the said
shafting and gears through the said rod, substantially as described.
Dated this 7th day of February 1800
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London, Agent for the Applicants.