Year: 1893

page_text: · Date of Application, 21st Nov., 1893-Accepted, 23rd Dec., 1893
8, the table thereof:
9, the housings:
10, a pair of housings secured to the table and having journal boxes in their
upper ends adapted to receive the journals of the shaft of the blower-piston and
support the piston rigidly with the axis of its shaft parallel with the path of
movement of the planer table:
11, a clamp pin carried by one of the housings 10 and adapted to be projected
into a proper hole in the end of the blower-piston, whereby the piston, when sup-
ported in the housings 10, is held against rotation in the housings 10 and in
accurate position :
12, a rail secured against the upper portion of the housings 9 of the planer :
13, a saddle fitted to slide along this rail:
14, a tool slide fitted to slide vertically in a dove-tail in the saddle:
15, a counterbalancing weight connected with the tool slide and adapted to draw
it upward in the saddle:
16, a template rigidly secured to the lower edge of the rail and having its lower
Pied

page_text: edge formed into a curve corresponding with the curve to be produced upon the
upper surface of the blower-piston, as from 2 to 2 in Fig. 3:
17, a stud projecting rigidly from the lower end of the tool slide 14 rearwardly
under the template 16 and armed at its rear end with an upwardly presenting
knife edge (or it may a roller) making contact with the curve of the template, the
arrangement being obviously such that counter-weight 15 tends to hold the slide 14
upward as far as the contact of stud 17 with the template will permit:
18, a downwardly open notch in the lower portion of the saddle to the rear of
tool slide 14 to permit of the rise and fall of stud 17 as that stud follows the curve
of the template:
"
19, a tool block fitted to slide vertically in a dove-tail upon the front of tool
slide 14:
20, an adjusting screw engaging the tool slide and tool block and serving as
means by which the tool block 19 may be vertically adjusted upon the slide 14:
21, an apron pivoted in the front of tool block 19 and provided with a tool
clamp:
22, a tool held in the tool clamp of the apron and presenting its cutting point
downwardly in the vertical plane of the axis of stud 17:
23, a second saddle upon rail 12, similarly provided with the described
accessories :
24, a second rail rigidly secured against the planer housings 9 below the axis of
the housings 10 and above the table of the planer :
25, a saddle similar to saddle 13, fitted to slide upon this lower rail and provided
with the accessories described in connection with saddle 13, the parts being however
inverted so that the cutting tool presents its: point upwardly:
26, a counter-weight tending to hold the tool slide of this saddle up, the action
of this counter-weight, however, being different from that of the counter-weight 15
in that counter-weight 15 tended to pull the cutting tool away from its work, this
tendency of the weight being resisted by the weight of the tool slide and parts
carried by it, while in case of counter-weight 26 the counter-weight tends to urge
the tool into the work, the action of the counter-weight being resisted by the
gravity of the tool slide and its attached parts:
27, a spring tail projecting downwardly from the apron which carries the tool of
saddle 25, the office of this spring tail being to urge the apron into normal working
position and still permit it to swing forward for the relief of the tool upon the
backing stroke of the planer:
28, a template rigidly secured to the upper surface of the rail 24 and
having its upper edge in the form of a guiding curve similar to that of
template 16:
J
29, a second saddle upon the rail 24, similar in construction and accessories
to saddle 25 :
30, a fifth saddle arranged for vertical sliding motion upon one of the housings 9
of the planer:
31, a tool slide sliding horizontally in this saddle:
:
32, a tool block sliding horizontally on this tool slide and controlled in its
position upon the tool slide by a screw as in the case of the other saddles:
33, the cutting tool pertaining to this saddle and carried in an apron pivoted in
tool block 32:
34, a rack upon tool slide 31 and engaged by a pinion journalled in a portion of
saddle 30:
35, a sheave upon the shaft of this pinion:
:
36, a counter-weight suspended by a chain winding upon sheave 35:
37, a template rigidly secured to the outer surface of the planer housing on which
saddle 30 slides, this template presenting a guiding curve outwardly:
38, a knife edge (or roller) stud projecting rearwardly from tool slide 31 and
engaging the guiding edge of template 37, the template therefore controlling the
position of the tool slide and parts carried by it, and the counter-weight 36 tending

page_text: to urge the tool slide inwardly and hold the knife edge or roller in contact with the
template: and
39, a saddle upon the opposite housing of the planer, similar in construction and
provisions to the saddle 30.
No illustration or description is given of the means for traversing the saddles
upon the rails etc. on which they move, as such means will be the same as is usual
with planing machines, as will also be the means for giving reciprocating motion
to the table of the machine.
The blower-piston having been secured in the housings 10, and the cutting tools
properly set, the cutting tools will reproduce upon the pistou the curves defined by
the templates. For blower-pistons of the form indicated in Fig. 4, four templates
would be employed, but for pistons of the form indicated in Fig. 3, the templates 37
may be omitted as the only requirement is that the tools at the side shall dress a
narrow rib, and the face of the tool may be relied upon to give the proper form to
these narrow ribs.
Having now particularly described and ascertained the nature of my said inven
tiou, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination, substantially as set forth, with a planer bed, planer table,
and planer housings, of a pair of shaft housings projecting upwardly from the
table and adapted to support a blower-piston by its axial shaft, a rail secured to
the planer housings above the axis of the shaft housings, a rail secured to the
planer housings below the axis of the shaft housings, one or more saddles fitted to
slide upon each of said rails, tool slides and accessories carried by said saddles,
templates mounted upon said rails, and studs carried by said tool slides and engaging
the templates of their respective rails.
2. The combination, substantially as set forth, with a planer bed, planer table,
and planer housings, of a pair of shaft housings projecting upwardly from the
table and adapted to support a blower-piston by its axial shaft, a rail secured to
the planer housings above the axis of the shaft housings, a rail secured to the
planer housings below the axis of the shaft housings, one or more saddles fitted to
slide upon each of said rails, tool slides and accessories carried by said saddles,
templates mounted upon said rails, studs carried by said tool slides and engaging
the templates of their respective rails, saddles arranged to slide upon the planer
housings, templates secured to the planer housings, and tool slides and accessories
at the saddles of the housings and having studs engaging the templates on the
housings.
3. The combination, substantially as set forth, with a planer bed, planer table,
and planer housings, of shaft housings projecting upwardly from the planer table
and adapted to support a blower-piston by its axial shaft, a rail secured to the
planer housings, a template secured to said rail and presenting a curved edge
toward the axis of said shaft housings, a pair of saddles fitted to slide upon said
rail, a tool slide in each of said saddles, tool-carrying accessories upon said tool
slides, and studs projecting from said tool slides into engagement with said
template.
Dated this 21st day of November 1893.
ALLISON BROS.,
Agents for the Applicant.