Early Car Wheel Traction Device
A 1915 patent for a metal device clamped to a car wheel to improve traction on slippery surfaces.
Original patent title: “Vehicle-scotch.”
A 1915 patent for a metal device clamped to a car wheel to improve traction on slippery surfaces. Granted to Individual in 1915, and it is now in the public domain.
Key facts
Coverage
What does this patent actually cover?
This patent describes a device designed to wrap around a vehicle's wheel, specifically to provide better grip on roads covered in snow, ice, or mud. It consists of a flexible metal band that encircles the tire. Attached to this band are cross-members, essentially metal bars or plates, that extend outward from the wheel's circumference. When the wheel rotates, these cross-members dig into the slippery surface, preventing the tire from spinning freely and helping the vehicle move forward. The patent claimsclaimsThe numbered statements at the end of a patent that legally define what the inventor owns.Read more → a 'vehicle-scotch' comprising a flexible band and 'cleats' or cross-members for traction.
The gap
What does this patent NOT cover?
- Does not cover tire chains that are a continuous loop around the tire.
- Does not cover devices that attach to the vehicle's chassis instead of the wheel.
- Does not cover pneumatic tires with specialized tread patterns.
- Does not cover the use of sand or other loose materials for traction.
- Does not cover devices that are permanently affixed to the wheel rim.
These exclusions are unique to PatentBrief — derived from the actual claim language, not patent-office boilerplate.
What made this novel
The innovation lies in the simple, clamp-on design that could be easily attached and removed from existing wheels, providing enhanced grip without requiring a complete redesign of the wheel or tire itself.
The Patent Drawing
Schematic visualization of the patent's claim structure. Hand-drawn diagrams in progress for each landmark patent.
Where you've seen this
Real-world examples
Early 20th-century automobiles
Traction devices for horse-drawn carriages (conceptually similar)
Why it matters
The bigger picture
This patent represents an early attempt to solve the common problem of vehicle traction in adverse weather conditions, predating widespread adoption of modern tire technology. It highlights the ingenuity of early automotive engineers in addressing practical challenges with mechanical solutions.
Filed
October 31, 1914
Granted
June 1, 1915
Market context
Who's building on this
Companies in this space
Given the patent's age and the significant advancements in tire technology since 1915, it is unlikely that current companies are directly building on this specific design. However, the fundamental problem it addresses—vehicle traction—remains a core focus for tire manufacturers and automotive engineers.
Market impact
This patent likely had minimal direct market impact due to its age and the rapid evolution of automotive technology. It serves more as a historical artifact illustrating early solutions to traction challenges, which were eventually superseded by more advanced tire designs and traction control systems.
Claim 1 — Plain English
What this patent covers
This patent describes a device designed to wrap around a vehicle's wheel, specifically to provide better grip on roads covered in snow, ice, or mud. It consists of a flexible metal band that encircles the tire. Attached to this band are cross-members, essentially metal bars or plates, that extend outward from the wheel's circumference. When the wheel rotates, these cross-members dig into the slippery surface, preventing the tire from spinning freely and helping the vehicle move forward. The patent claims a 'vehicle-scotch' comprising a flexible band and 'cleats' or cross-members for traction.
The clever bit
The innovation lies in the simple, clamp-on design that could be easily attached and removed from existing wheels, providing enhanced grip without requiring a complete redesign of the wheel or tire itself.
What it does not cover
- Does not cover tire chains that are a continuous loop around the tire.
- Does not cover devices that attach to the vehicle's chassis instead of the wheel.
- Does not cover pneumatic tires with specialized tread patterns.
- Does not cover the use of sand or other loose materials for traction.
- Does not cover devices that are permanently affixed to the wheel rim.
Patent Journey
From filing to expiry
PatentBrief Score
Impact Score
Limited data
Citation count
0/40
No citations yet
Claim breadth
0/20
Narrow claimsclaimsThe numbered statements at the end of a patent that legally define what the inventor owns.Read more →
Recency
0/20
Older than 20 years
Assignee scale
0/20
Independent or smaller assigneeassigneeThe entity that owns the patent — usually the inventor's employer or a company.Read more →
PatentBrief Impact Score — based on citation count, claim breadth, recency, and assignee scale. Not a legal assessment.
Heuristic Value Estimate
What this patent might be worth
$2K – $8K
Midpoint $5K · expired or expiring · industry ×1.6
Heuristic only — blends forward/backward citation counts, claim scope, time remaining, litigation history, and CPC-derived industry baseline. Real valuations need a professional appraisal.
Concepts involved
Cite this patent
Holt, J. H. (1915). Early Car Wheel Traction Device (U.S. Patent No. 1,141,798). U.S. Patent and Trademark Office. https://patentbrief.org/patent/us/1141798/zipper-slide-fastener
Auto-generated from the patent record. Double-check author order and the issue date against the official USPTO document before submitting.
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Common Questions
Frequently Asked Questions
What does Early Car Wheel Traction Device cover?
A 1915 patent for a metal device clamped to a car wheel to improve traction on slippery surfaces.
Who owns patent US 1141798?
Individual owns this patent, granted in 1915.
When does this patent expire?
This patent has expired and is now in the public domain — anyone can use the invention freely.
What problem does this patent solve?
This patent represents an early attempt to solve the common problem of vehicle traction in adverse weather conditions, predating widespread adoption of modern tire technology. It highlights the ingenuity of early automotive engineers in addressing practical challenges with mechanical solutions.
What does this patent NOT cover?
Does not cover tire chains that are a continuous loop around the tire.
Same assignee
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