Practical Carriage Building
Compiled by M.T. Richardson, Vol.1. 1891
Setting Boxes in Hubs Part 2
For heavier grades of work it becomes necessary to have appliances much larger and stronger. I make a bench as illustrated in Fig. 161, to which I attach legs, or adjust it to two strong trestles. H H are two strong bolts fastened to the bench, with bolts and two collars, upon which rest the crosshead, as shown in Fig. 165, through the holes W W of which pass the cords of the bolts N N, shown in Fig. 161. They are secured with nuts on the upper side. The dotted lines in Fig. 101 represent the crosspiece in Fig. 165, as adjusted. Fig. 162 shows the bolt, the bottom of which is secured to the bench, b is a stem, c is a collar, and d a bolt on its threaded end. Fig. 163 is the plate which goes under the bottom of the bench V, and is secured with two log screws run in the holes U U. T is a barred portion with a thread, which is inserted in the hole Y, in Fig. 156, from the under side, the threaded portion of the screw R, in Fig. 164, fitting the same.
Fig. 164 is the power screw. R is the pin and threaded portion. P is an eye or socket for the insertion of the lever, shown by the dotted lines 0 0. The hole K, in Fig. 161, is used when forcing the box out of the hub, and ought to be furnished with an iron plate three-eighths of an inch thick on the upper and under sides. To use this device, insert the box as before, remove the crosshead, and place the wheel on the bench, the face of the hub down; adjust the crosshead, and place on the back of the hub a piece of round cover like that shown in Fig. 1G4.
The iron should be counter sunk on the top so as to admit of a proper seating of the point of the screw pin; then apply the lever. The job is done much quicker than it can be described. To remove boxes, place the wheel on the bench with the butt of the hub down, put pieces of round iron on the box, and apply the pressure. The box will soon drop through the hole in the bench, as shown at K in Fig. 161. These tools are not very expensive, and earn their cost in half a dozen sets of wheels.— By IRON DOCTOR.