Improvements in Machines for Cutting and Planing the Mitres of Picture Frames and the like.
Year: 1889

page_text: Date of Application, 29th Nov., 1889.
Complete Specification Left, 29th Aug., 1890-Accepted, 4th Oct,
1890
DOOYINLANT
CORATION
Improvements in Machines for Cutting and Planing the Mitres of
Picture Frames and the like.
I, JOHN NEWCOMBE of No. 80 Highcross Street Leicester in the County of
Leicester Carver, Gilder and Picture Frame Manufacturer, do hereby declare the
nature of this invention to be as follows :—
This invention relates to Improvements in Machines for Cutting and Planing the
Mitres of Picture Frames, and the like, or a combined cutting and planing machine
designed that both appliances can be driven from one shaft and constructed in one
standard, frame or bench.
At one end of the bench I arrange a sliding table having a slit up the centre, at the
inner end of this slit is fastened angle strips forming a V, the upper faces of which
are marked with a scale of inches and parts of inches; between the V angle strips,
and below the top of the machine, or bed upon which the sliding table works is fixed
a short shaft carrying a pulley and also a circular saw vertically, which derives its
movement by a belt from the main shaft being passed over the pulley, this is for cutting
the angles of strips of material, which are placed against the outside edges of the
angle strips, then the table which moves on rollers, is moved towards the saw, when
the angles are cut as desired, the saw is protected by a hood or covering, when the
mitres are cut they are passed on to the opposite side to be planed on to a box which
hides from view a couple of reciprocating planes moving horizontally in ✓ shaped
grooves in a frame in the bed of the machine prepared for them parallel to each other,
and by which the mitre or similar joints of picture frames are planed automatically by
the action of the planes in the following manner :-
A dovetailed groove is made in iron or wood frames to form the track, into these
dove tailed or V grooves are placed a sliding block or carriage, the ends of which are
also V grooved to receive the bevelled ends of the planes which are shaped to fit, the
planes being put in the blocks, are screwed down to them, or secured in any convenient
manner, and in the centre of the underside of the sliding blocks, is an eye into which
is fitted one end of connecting rods, the other ends of the rods being secured to a
crank disc or excentrics fitted on the end of a secondary shaft, these also receive their
motion from a pulley on the same shaft, over which a belt is passed from another
pulley on the main shaft fitted on the lower frame of the machine, each shaft is carried
in suitable bearings at right angles to the jack planes upon the driving shaft are fast
and loose pulleys the machine being driven by power.
At the end of the machine carrying the planing tools is arranged, between the
reciprocating planes upon the bed of the machine and parallel to the planes, a raised
moveable table on which are put set sticks or angle strips, set by thumb screws to the
angle desired, the mitred strips of material is then placed against them, the mitres to
the inner face of the planes that the edge of the knives in passing takes off the rough
edge of the mitre, by using two reciprocating planes more than one mitre can be
operated upon successively, to obviate chipping the enamel, gold, or bronze of the
mitres of picture frames I cause the knives to be set obliquely in the planes and
the mitres are placed with their enamelled or gilded faces uppermost thus the edges
are planed quite smooth.
I do not confine myself to the connecting rods working from underneath the bed of
the machine to cause the backward and forward motion of the jack planes whereby
one jack moves up the track while the other is moving in the opposite direction. 1
may employ a rack gear for the purpose if found suitable.
The adjustment of the connecting rods to the lower face of the blocks or carriages,

page_text: carrying the jack planes causes them to work more evenly than if fixed to the sides of
the planes.
I also employ several ✓ strips so that if the lower part of the knives become dull I
place possibly more than one of these strips on the one fixed to the machine either for
planing or cutting and so keep the several parts of the edge of the knives in use, and
not always the lower part of the knives only.
Dated this 26th day of November 1889.
WILLIAM BESTWICK MAXFIELD,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Machines for Cutting and Planing the Mitres of
Picture Frames and the like.
I, JOHN NEWCOMBE of No. 80 Highcross Street Leicester in the County of Leicester
Carver, Gilder and Picture Frame Manufacturer, 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 Improvements in Machines for Cutting and Planing the
Mitres of Picture Frames, and the like, or, a combined cutting and planing machine
designed that both appliances can be driven from one shaft and constructed in one
standard, frame or bench as will be seen from the drawings annexed in which
Figure 1. is a side sectional elevation of a machine constructed in accordance with
this invention.
Figure 2. is an end view of same showing the ends of the reciprocating planes and
driving gear.
Figure 3 is a plan view of the top of the said machine, which is constructed as
follows:
At one end of the frame A, 1 arrange the sliding table B, having a slit up the
centre 61, at the inner end of this slit is fastened angle strips 62, forming a V, the
upper faces of which are marked with the divided scale 63, between the Vangle strips,
and below the top of the machine or bed upon which the sliding table works is fixed in
the bearings, the short shaft C, carrying the pulley D, and also the circular saw E,
which derives its movement by a belt b, from the pulley 66, on the main shaft F, for
cutting the angles of strips of material which are placed against the outside edges of
the angle strips, the table B is then moved towards the saw, when the angles are cut
as desired, the saw is protected by a hood or covering e¹; when the mitres are
cut they are then passed on to the opposite end to be planed, or on to a hood or
covering such as e, placed over the reciprocating planes G, moving horizontally
in the grooves 9', in the frame g². in the bed of the machine prepared for them
parallel to each other, and by which the mitre or similar joints of picture frames
are planed automatically by the action of the planes, the dove tailed grooves g¹,
are made in iron or wood frames to form the track into these grooves are placed
the sliding carriages H, the edges of which are formed to fit in the grooves g³,
the planes being put into the said blocks or carriages H, are screwed down and
secured by the nuts ', on the pins 2, from the underside of the sliding blocks
or carriages H. At the bottom of the pins are eyes h³, into which is fitted one
end of the connecting rods I, the other ends of the rods being secured to the
crank discs J, or excentrics fitted on the end of the secondary shaft K, these
also receive their motion from a pulley on the same shaft over which a belt is
passed from another pulley on the main shaft fitted on the lower frame on the
machine, each shaft is carried in the bearings L, at right angles to the jack planes.
Upon the driving shaft are fast and loose pulleys M and N the machine being
driven from the driving pulley n¹. At the end of the machine carrying the
planing tools is arranged between the reciprocating planes, and upon the bed

page_text: of the machine and parallel to the planes a raised moveable table O, on which
are put set sticks or angle strips P, set by thumb screws not shown to the angle
required, the mitred strips of material are then placed against them, the mitres to
the inner face of the planes that the edges of the knives in passing takes off
the rough edge of the mitre, by the use of two reciprocating planes more than
one mitre can be operated upon successively. To obviate chipping the enamel, gold
or bronze of the mitres of picture frames I cause the knives to be set obliquely Q,
in the planes and the mitres are placed with their enamelled or gilded faces
uppermost thus the edges are planed quite smooth.
I do not confine myself to the connecting rods to cause the backward and
forward motion of the jack planes whereby one jack moves up the track while the
other is moving in the opposite direction. I may employ a rack gear such as is
shown in dotted line Figure 1. the ends of the connecting rods I are attached to
a weighted sector R, gearing with a rack plate 71, represented in dotted line on
bottom of the reciprocating plane. The adjustment of the connecting rods I as first
stated to the lower face of the blocks or carriages H, carrying the jack planes causes
them to work more evenly than if fixed to the sides of the planes.
I also employ several V strips and build them up so that if the lower parts of the
knives become dull either for planing or cutting I am enabled to keep the several
parts of the edges of the knives in use and not always the lower part of the knives
only.
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:
In a machine or bench for cutting and planing the mitres of picture frames, and
the like, the combination of the reciprocating planes G, actuated by the connecting
rods I, attached to crank discs J, and to the underside of the planes, substantially and
severally in the manner shown and described.
Dated this 26th day of Angust 1890.
WILLIAM BESTWICK MAXFIELD,
The Central Patent Office, Leicester, Agent for the Applicant.