1903 Patent No. 26,997 Double-acting Pumps, Jan Grundel, The Hague
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- Condition : Used
- Dispatch : 3 Days
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- ID# : 230421840
- Quantity : 1 item
- Views : 3
- Location : United Kingdom
- Seller : allsortsofephemera (+21801)
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- Start : Sun 03 Aug 2025 08:29:32 (EDT)
- Close : Tue 02 Sep 2025 08:29:32 (EDT)
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Patent No. 26,997 A.D.1903 "Improvements in Double-acting Pumps"
"I, Jan Grundel, of 39 Van Speykstraat, The Hague, Holland, Engineer, do hereby declare the nature of this invention to be as follows: This invention relates to means for packing the plunger in a double-acting pump. Pumps of this type were formerly constructed with two external stuffing-boxes, but under such circumstances, considerable loss of power occurs owing to excessive friction..."
2 pages of text + a drawing which have been disbound from a larger volume.
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Listing Information
| Listing Type | Gallery Listing |
| Listing ID# | 230421840 |
| Start Time | Sun 03 Aug 2025 08:29:32 (EDT) |
| Close Time | Tue 02 Sep 2025 08:29:32 (EDT) |
| Starting Bid | Fixed Price (no bidding) |
| Item Condition | Used |
| Bids | 0 |
| Views | 3 |
| Dispatch Time | 3 Days |
| Quantity | 1 |
| Location | United Kingdom |
| Auto Extend | No |
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