New Canadian Patents
The Accompanying Illustrations are those of patents recently issued to Canadian Inventors, and obtained through Mr. C. H. Riches. The Canadian patents featured in this article relate to tools and tool making ability. These inventions may assist the Engineer in developing industrial capability to further production.
Canadian Patent 38348, Improvements in Saw Set
Canadian Patent No. 38348, granted to John Mcintosh for improvements in saw sets. The device covered by this patent is for the purpose of setting the teeth of cross-cut or other saw without injury to the same. The invention consists of the device illustrated in the sketch.
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Canadian Patent 40486, Improvements in Ruler
Patent No. 40486, granted to W. S. McKercher for improvement in rulers. The subject of this invention relates to a ruler for the use of accountants and others, and this ruler is so constructed that it can be easily shifted from point to point over the surface to be ruled. The ruler is provided with a ruling edge which, under no circumstances, will come in contact with the ruled surface, thus preventing the ruled surface being smeared or otherwise disfigured.
The ruler is comprised of a ruling edge bevelled in such a manner that the top of the ruling edge overhangs the bottom. This construction serves as a guide for the pen, and prevents the bottom or side of the pen coming in contact with the bottom of the ruling edge.
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Canadian Patent 41676, Improvements in Adjustable Wrenches
Patent No. 41676, granted to William Bill for improvement in wrenches. This invention relates to an improvement in wrenches so constructed that the jaws of the wrench can be interchanged, and the wrench converted at any time into a monkey wrench, a pipe wrench, or a stud wrench, in order that one wrench can be employed for any multiple number of purposes. The wrench consists essentially of a fixed jaw solid upon a shank which passes through or terminates in the handle. A lever pivotically connected to the shank, one end of which terminates in a rounded metallic bar, whilst the other end is adapted to be operated by the hand. On the rounded end of the lever is a slidings jaw, the inner face of which is serrated to engage with the corresponding serrated face of the shank. Within the shank is a longitudinal slot into which enters a guide pin secured to the sliding jaw for the purpose of holding the said jaw in its normal position.
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An innovative Wheel Hub
A new wheel hub has been lately invented in which an oil chamber is bore of the hub, and a passage having a check valve is formed surrounding the arranged to feed the oil from the oil chamber to the bore. A hub constructed on this principle can carry a six months' supply of oil, and the axle can be kept properly lubricated.
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Daily Rate of Patent applications
Any gossip about a decreasing supply of patent applications in the Canadian intellectual property scheme can be demonstrated as unfounded. We have noted the relevant Patent applications during the reporting period of April 1893 and graphed the daily award rate in the graphic below. Even with a small sample window, it can be clearly seen that comfortably between a dozen and two dozen Patents get awarded daily. This is a postive sign for the Canadian engineer and inventor. Our hope is that a vibrant trade can be endorsed for our novel Patent classifieds.