Answers.Body: <p><a href="https://i.sstatic.net/eDlFC.jpg" rel="noreferrer"><img src="https://i.sstatic.net/eDlFC.jpg" alt="enter image description here"></a>
  <a href="https://i.sstatic.net/sLdwJ.png" rel="noreferrer"><img src="https://i.sstatic.net/sLdwJ.png" alt="enter image description here"></a>
  <a href="https://i.sstatic.net/cGqyC.png" rel="noreferrer"><img src="https://i.sstatic.net/cGqyC.png" alt="enter image description here"></a></p>
  
  <p>Hey, there <em>Happy Dog</em>!  These train pieces?</p>
  
  <ul>
  <li>Part #<em><a href="https://www.bricklink.com/catalogItemInv.asp?S=12-3" rel="noreferrer">BB37</a></em> - Train Brick 2 x 4 x 1 1/3 Sliding Block with Wheels
  Holder.</li>
  <li>Part #<em><a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=wheel2a&amp;idColor=11#T=S&amp;C=11&amp;O=%7B%22color%22:11,%22iconly%22:0%7D" rel="noreferrer">Wheel2A</a></em> - Wheel Spoked for Motor.</li>
  </ul>
  
  <p>Together they appear in <em><a href="https://www.bricklink.com/catalogItemIn.asp?P=bb37&amp;in=S" rel="noreferrer">these</a></em> <em>LEGO</em> sets.</p>
  
  <p>See ya!</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2018-12-02T09:07:53.597Z
Answers.Text: Thank you so much Rin Rio-Oki. That are the blocks!! You identified them and did that very fast. This forum is amazing. Lego made so many different parts, without a community of adult Lego lovers it would take so much time to identify every little bit of it. And I'm a beginner, but willing to learn. Thanks again. Cordially,
  Happy Dog.
Answers.UserDisplayName: Happy Dog
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2018-12-01T23:09:42.690Z
Answers.LastActivityDate: 2018-12-01T23:23:23.790Z
Answers.LastEditDate: 2018-12-01T23:23:23.790Z
Answers.UserDisplayName: Rin Rio-Oki
Body: <p>I found a bunch of Pat Pend <em>LEGO</em> in a thrift shop. Among all the goodies there are two black smooth 2x4 bricks with train wheels attached to them. </p>
  
  <p>Their characteristics are as followed:</p>
  
  <ul>
  <li>They are studless.</li>
  <li>Have a closed bottom.</li>
  <li>On one of the long sides there is a half moon like cut-out with a
  sort of flat hook thing.</li>
  <li>On the short sides there are detachable train wheels with ten spokes.</li>
  <li>The wheel axles are made of yellow brass.</li>
  <li>The logo on top is the old <em>LEGO</em> logo with the letter "<em>O</em>" being open.</li>
  <li>The logo is quite large.</li>
  </ul>
  
  <p>Can anyone help me identify these parts?</p>
  
Tags: <part-identification><trains><wheel><discontinued>
Title: Can You Identify These Black Studless 2x4 Brick With Train Wheels?
UserDisplayName: Erik van der Vaert
ThreadText: # Can You Identify These Black Studless 2x4 Brick With Train Wheels?
  
  (Asked by: username_0 on 2018-12-01)
  
  I found a bunch of Pat Pend *LEGO* in a thrift shop. Among all the goodies there are two black smooth 2x4 bricks with train wheels attached to them.
  
  Their characteristics are as followed:
  
  * They are studless.
  * Have a closed bottom.
  * On one of the long sides there is a half moon like cut-out with a
    sort of flat hook thing.
  * On the short sides there are detachable train wheels with ten spokes.
  * The wheel axles are made of yellow brass.
  * The logo on top is the old *LEGO* logo with the letter "*O*" being open.
  * The logo is quite large.
  
  Can anyone help me identify these parts?
  
  **Tags:** part-identification, trains, wheel, discontinued
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2018-12-01. Score: 5
  
  [![enter image description here](https://i.sstatic.net/eDlFC.jpg)](https://i.sstatic.net/eDlFC.jpg)
  [![enter image description here](https://i.sstatic.net/sLdwJ.png)](https://i.sstatic.net/sLdwJ.png)
  [![enter image description here](https://i.sstatic.net/cGqyC.png)](https://i.sstatic.net/cGqyC.png)
  
  Hey, there *Happy Dog*! These train pieces?
  
  * Part #*[BB37](https://www.bricklink.com/catalogItemInv.asp?S=12-3)* - Train Brick 2 x 4 x 1 1/3 Sliding Block with Wheels
    Holder.
  * Part #*[Wheel2A](https://www.bricklink.com/v2/catalog/catalogitem.page?P=wheel2a&idColor=11#T=S&C=11&O=%7B%22color%22:11,%22iconly%22:0%7D)* - Wheel Spoked for Motor.
  
  Together they appear in *[these](https://www.bricklink.com/catalogItemIn.asp?P=bb37&in=S)* *LEGO* sets.
  
  See ya!
  
  > **Comments:**
  > **username_2**: Thank you so much Rin Rio-Oki. That are the blocks!! You identified them and did that very fast. This forum is amazing. Lego made so many different parts, without a community of adult Lego lovers it would take so much time to identify every little bit of it. And I'm a beginner, but willing to learn. Thanks again. Cordially, Happy Dog.  
  
  ---
  
  